delivered the opinion of the Court:
This action was brought by the appellee, the Camden Iron Works, a corporation created under the laws of the State of New Jersey, against the District of Columbia, to recover the price of certain iron pipes manufactured for and delivered to the defendant by the plaintiff, under contract under seal. This action is brought in covenant, upon the theory and according to the contention of the plaintiff, that the contract is a specialty contract of the defendant, and one of the principal questions in the case is, whether the agreement sued on is the deed of the defendant, or only a simple contract.
There were several pleas interposed, — all going to and denying the right of the plaintiff to recover, — though some of them in form are appropriate only to an action of assumpsit; but among the pleas is the plea of non est factum. There is no question made, however, as to the inconsistency or inappropriateness of the pleas, and issue was joined on them all, except the plea of the Statute of Limitations, to which a demurrer was entered; and the demurrer was sustained and the plea ruled bad. This plea of the Statute of Limitations *210of-three years was pleaded as a bar, upon, the theory that the proper action upon the contract was assumpsit, and not covenant. But the court did not entertain that view, and accordingly ruled the plea bad on demurrer.
The contract bears date the 29th day of June, 1887, and on its face and by its terms it professes to be made by the District of Columbia, of the first part, and the Camden Iron Works, by Walter Wood, president, of the second part. The contract is conceded to have been for and in behalf of the municipal corporation of the District of Columbia, and for material to be supplied for the water department of the District of Columbia; and the contract throughout professes to be made by and between the District' of Columbia and the Camden Iron Works. The conclusion of the contract is as follows:
“In witness whereof, the undersigned, William B. Webb, Samuel E. Wheatley, and William. Ludlow, Commissioners of the District of Columbia, appointed under the Act of Congress entitled ‘An act providing a permanent form of government for the District of Columbia,’ approved June 11,1878, and the party of the second part to these presents, have hereunto set their hands and seals the day and year first above written.
“William B. Webb [l. s.]
“S. E. Wheatley [l. s.]
“ William Ludlow [l. s.]
“ Commissioners of the District of Columbia.
[Corporate Seal ' “WALTER Wood,
Ironworks.] “Pres’t Camden Iron Works.
“ Signed and sealed in the presence of—
“E. H. Dieeenbach.”
This contract was proved and offered in evidence by the plaintiff, but its admissibility was objected to by the defendant, upon the ground that the declaration was in covenant, declaring upon a sealed instrument, whereas the contract *211offered in evidence is not under the corporate seal of the District of Columbia, and therefore not the covenant of the defendant, but a simple contract merely. The objection being overruled, the defendant excepted.
The plaintiff then proved that the municipal corporation of the District of Columbia had a corporate seal, but that the same had not been generally used, until after the contract here sued upon had been executed, and had only been used in executing deeds of conveyance, and instruments of that character. And the plaintiff further proved by competent evidence, that though the contract bears date the 29th of June, it was not in fact executed and delivered by the Commissioners before August 4, 1887. This proof was also objected to by the defendant; and the objection was taken upon the ground that it was not competent to the plaintiff to show by parol evidence that the real or true date of the contract was other or different from that stated on its face; and that the plaintiff was estopped from showing by parol that the contract was not in fact signed by the defendant, and did not go into effect until a date subsequent to that expressed in the instrument. This objection was likewise overruled by the court, and the defendant excepted.
The contract provided -for the manufacture of certain designated sizes of iron pipe by the plaintiff, and its complete delivery to the defendant, “ within 136 days after the date of the execution of the contract; one-half of each size to be delivered on or before September 25, 1887, and the remainder on or before November 10, 1887.” For failure to deliver the pipes within the time thus fixed, the contract provided that there should “ be deducted from the contract price, as in said contract specified, one per cent, of the contract price for all delinquent articles for each and every week day that they remained delinquent.” There was a further provision that for failure to complete the work at the time specified, there should be deducted from the money to become due under the contract “ the sum of ten dollars per diem for the *212same period estimated as liquidated and fixed damages to the District.”
In the contract there was provision made for inspecting the iron pipes and “ to determine whether there was any reason for rejection, prior to delivery.” Payments were to be made after August 1, 1887, for all pipe “ received and accepted in proper order and condition, less 20 per cent, of the amount found due, to be reserved until the satisfactory completion of the contract.”
There appears to have been a suspension in the execution of the contract, owing to misunderstandings as to the qualities of the work, and the inspection thereof; and consequently, but a small proportion of the pipe was delivered prior to November 30, 1887. But after that date, pipe worth $11,404.09, at contract rates, according to estimate made, was delivered to and accepted by the District of Columbia, and used by the corporation. The total value, at contract rates, of all the pipe delivered to and accepted by the District of Columbia, was $16,335.87, on which there was paid in cash $5,291.71, by two checks, which did not indicate that they were meant to be in full settlement of all moneys due under the contract; and the balance, $11,044.16, was more than counterbalanced by the fines and penalties charged up by the defendant for non-delivery of the pipe within the time specified in the contract. It was for this balance of $11,044.16, with interest thereon from the 27th of February, 1888, that this action was brought. There is no pretense that there was any demand made by the defendant for any more or other quantity of pipe than that delivered under the contract and which was refused to be-delivered by the plaintiff. On the contrary, on November 30, 1887, when Captain Symons, the Assistant Engineer Commissioner of the District, requested that no more pipe should be cast, for delivery under the contract, there remained to be cast about 340,000 pounds, on which the profits to the plaintiff, at contract prices, would have been *213about $1,300. After the plaintiff’s letter of November 30, 1887, assenting to the cancelation of the contract, as to all pipe not then manufactured, provided all pipe then manufactured should be taken and paid for at contract rates, without deductions, and Captain Symons’ reply thereto, directing the sending on of the pipe then cast and accepted by Hoyt, the value of the pipe, at contract rates, actually shipped to the defendant was $11,404.16. It was for this amount that the verdict was rendered, with interest, and without any allowance or deductions for forfeitures or penalties for nondelivery of pipe within the time prescribed by the terms of the contract.
Upon the whole evidence, both plaintiff and defendant offered prayers for instruction to the jury; and those on the part of the plaintiff were granted, while those offered by the defendant were refused.
By the first of the instructions given at the instance of the plaintiff, the jury were directed that, upon finding the execution of the contract, although they might find that the same “was not fully performed by either party, yet if the plaintiff cast and delivered pipe in accordance with the specifications of said contract, and the defendant accepted the same and appropriated it to its own use, the plaintiff is entitled to recover in this action the value of the pipe so accepted at contract prices, deducting therefrom the liquidated damages specified in said contract sustained by the defendant, if any, by the failure of the plaintiff to deliver the pipe within the time limited by the contract, and any payments oh the same.”
By the second instruction granted, the jury were directed, that if the plaintiff “was prevented from completing the delivery of pipe by it stipulated to be manufactured and delivered, under the contract offered in evidence, within the time or times therein limited, by any act or omission on the part of the defendant, then the defendant is not entitled to charge against the plaintiff any fines or penalties for such *214delay in delivering pipes as was occasioned by such act or omission.”
And by the third instruction granted, the court informed and directed the jury, “that if the defendant by its silence or conduct caused the plaintiff to believe, on or about the 1st day of December, 1887, that all pipe thereafter delivered would be taken and paid for at contract rates, without any deduction, and thereby induced the plaintiff to act on that belief, and thereafter deliver pipe to the defendant which the plaintiff would not have otherwise done, and the defendant accepted such pipe, the defendant is estopped from charging against the plaintiff any fines or penalties for not delivering such pipe within the time or times specified by the contract.”
The prayers on the part of the defendant were substantially and in effect the converse of the instructions given at the instance of the plaintiff. They sought to have it declared to the jury, that the plaintiff could not maintain this form of action upon the contract, and therefore the verdict should be for the defendant. That there could be no recovery upon the contract for the price of the pipe furnished to the defendant after November 10, 1887. That if any recovery could be maintained by the plaintiff against the defendant for the pipe delivered, it was the' right of the defendant to charge against the price, as liquidated damages, the penalties provided for in the contract. That no interest could be properly allowed on any amount awarded to the plaintiff prior to the institution of the suit. That the contract given in evidence appears on its face to have been executed on the 29th of June, 1887, and that the plaintiff is estopped from claiming that it was executed on any other day; and that the time within which the pipe specified in the contract was to be delivered should be computed from that date.
To the ruling of the court in respect to the prayers of the plaintiff, and to the rejection of those offered by the defendant, the latter excepted, and has appealed to this court.
*215The appellant has assigned some eleven errors in the rulings of the court to which we have referred; but these assignments may be reduced to four or five main and controlling propositions for which the appellant contends; and they are the following:
First. That the contract was not a specialty under the seal of the municipal corporation of the District of Columbia, but a simple contract merely, and therefore an action of covenant will not lie thereon against the corporation.
Second. That it was not competent to the plaintiff below to show by parol proof that the contract was finally and completely executed and delivered by the defendant at a date subsequent to that mentioned in the contract itself; and that the date inserted in the contract is the date from which the time allowed for the manufacture and delivery of the pipe should be computed.
Third. That the manufacture and delivery of the pipe required by the contract, within the time mentioned therein, constituted a condition precedent, and that no recovery can be had in this action upon the contract for any pipe delivered to and accepted by the defendant after the time specified in the contract for the delivery of the pipe; and, consequently, there was error in granting the first prayer offered by the plaintiff, the present appellee.
Fourth. That if the appellee be entitled to recover in this action for the pipe delivered after the times mentioned in the contract, the appellant, the defendant below, was entitled to charge up and deduct from the contract price of the pipe as liquidated damages, the penalties provided for in the contract.
Fifth. That if recovery be allowed, no interest should be included in such recovery.
These propositions embrace the whole scope of the contentions on the part of the appellant.
1. "With respect to the first of these propositions, we think there is no difficulty, and that the court below was entirely *216right,in holding the contract to be the deed, — a specialty,— executed in a lawful manner by the municipal corporation of the District of Columbia. The municipal corporation has the right to adopt a seal, and, from time to time, to change it. It has the right, therefore, to execute contracts under seal. The three Commissioners provided for in the organic act passed by Congress, June 11, 1878 (20 Stat. 103), are the chief executive officers of the municipal government, and contracts executed by them, under their hands and seals, intended as and manifestly are official acts and have the force and effect of deeds or sealed' instruments, according to their import, and bind the corporation and not the individual Commissioners. Respecting seals, says Judge Dillon (1 Dill. Mun. Corp., Sec. 190): “ The same general principles apply to private and to municipal corporations. Thus, a corporation of the latter class would doubtless be bound equally with a private corporation by any seal which has been authoritatively affixed to an instrument requiring it, though it be not the seal regularly adopted;” citing for this proposition the cases of Bank, etc., v. Railroad Co., 30 Vt. 150; Tenney v. Lumber Co., 43 N. H. 343; Mill Dam Foundry v. Hovey, 21 Pick. 417; Porter v. Railroad Co., 37 Me. 349. A corporation may adopt any seal that it chooses for the time being or pro hac vice; and although it may have adopted a particular seal, it will be bound by a deed, otherwise sufficient, which is sealed with any seal. Bank, etc., v. Railroad Co., supra; Tenney v. Lumber Co., supra; South Baptist Soc. v. Clapp, 18 Barb. 36; Hutchins v. Byrnes, 9 Gray, 367; Mann v. Pentz, 2 Sand. Ch. 257. The form or material of the seal is quite immaterial; it is rather the insignia that furnishes the evidence of the seal. The object of a seal is to give character to the instrument and to enable it to be distinguished and recognized for that which it was intended to be. This is as well effected by a scroll with the word seal written within it, or with the initials “L. S.” Hastings v. Vaughn, 5 Cal. 318.
*217Several of the cases cited in the brief of counsel for the appellee are very analogus to the present case; and without reciting the facts of those cases, it will suffice simply to refer to them by title, as they have been cited and approved in cases of more conclusive authority upon this court. The cases referred to are those of Stinchfield v. Little, 1 Greenl. Rep. 231; States. McCauley, 15 Cal. 429 ; Hopkins v. Mehaffey, 11 Sergt. & R. 126; Tenney v. Lumber Co., 43 N. H. 344.
In the cases of Sheets v. Selden, 2 Wall. 177, 187, and Jacksonville, etc., RR. Co. v. Hooper, 160 U. S. 514, the decisions of the Supreme Court of the United States would seem to be quite conclusive of the present question. In the first of the cases just mentioned, the court, by Mr. Justice Field, said : “ It may be stated generally that when a deed is executed, or a contract is made on behalf of the State by a public officer duly authorized, and this fact appears upon the face of the instrument, it is the deed or contract of the State, notwithstanding that the officer may be described as one of the parties, and may have affixed his individual name and seal. In such cases the State alone is bound by the deed or contract, and can alone claim its benefits.” And the court cites in support of this principle the cases of Stinchfield v. Little and The State v. McCauley, supra. In the second and more recent of the Supreme Court cases mentioned, that of Jacksonville RR. Co. v. Hooper, in an action of covenant, and where the instrument sued on was executed in very much the same form and terms as was the instrument in the present case, it was held, Mr. Justice Shiras delivering the opinion, that “ whether an instrument is under seal or not is a question for the court upon inspection; whether a mark or character shall be held to be a seal depends upon the intention of the executant; as shown by the paper; ” citing the cases of Hackers’ Appeal, 121 Penn. St. 192, and Pillow v. Roberts, 13 How. 472.
In the present case there is no question made as to whether the contract is the contract of the District of Columbia, and *218binding upon it; that is conceded. But it is denied by the appellant that the contract is its deed upon which an action of covenant can be maintained. This contention is wholly without foundation, as is clearly shown by the authorities to which we have referred.
2. The next question is that which relates to the admissibility of parol evidence to show that the contract was in fact executed and delivered by the Commissioners at a date subsequent to that stated in the contract. But this question, we think, is without reason or principle to support it. No principle is better established than that it may be averred in pleading and shown in proof that a deed, bond, or other instrument, was in fact made, executed and delivered at a date subsequent to that stated on its face. In the old case of Oshey v. Sir Baptist Hicks, Cro. Jac. 263, in an action of covenant, where, by a charter-party under seal, bearing date the 8th of September, it was agreed that the defendant should pay for a moiety of the corn which then was, or afterwards should be, laden on board a certain vessel, the defendant pleaded that the deed was not delivered until the %8th day of October, and that on and after that day there was no corn on board; and, on demurrer, it was held a good plea, because the word then was to be referred to the time of the actual delivery of the charter-party, and not to its date.
And so in the case of Hall v. Cazenove, 4 East, 477, it was held that a plaintiff could declare in covenant that the deed was indented, made and concluded on a day subsequent to the day on which the deed or charter-party on its face stated that it was indented, made and concluded. And in the more recent case of Steel v. Mart, 4 B. & Or. 272, in an action of debt on a lease, where the lease purported on its face to have been made on the 25th of March, 1783, habendum from the 25th of March now past. It was proved that the delivery was made after the day of the date, and the Court of King’s Bench held that the word now referred to the time *219of delivery, and not to the date of the lease. The same principle is clearly and fully stated by the Supreme Court, in the case of The United States v. Le Baron, 19 How. 73.
These cases are sufficient to show that there is nothing in the mere date as stated in the deed or contract to estop or preclude either of the parties from showing by parol evidence that the deed or contract was actually made and executed at a date subsequent to that stated in the deed or contract, and that, consequently, such deed or contract can only have effect and operation from the time of its actual execution.
3. With respect to the third proposition contended for by the appellant, the law would seem to be equally well settled against such contention, as it is in respect to the two preceding propositions. There is no question or dispute in regard to the fact that though the contract was not fully performed by either party thereto, according to its terms, yet there was a large quantity of pipe manufactured and delivered by the appellee and accepted and used by the appellant, under the contract; and that the further performance of the contract was determined and put an end to by the mutual consent of the parties; though the contract was not rescinded, except as to the further manufacture of pipe for delivery. In this state of case an objection is made and insisted upon by the appellant, that an action of covenant on the contract will not lie to recover the price of the pipe that was delivered, because the plaintiff can not truthfully aver and prove that it has well and fully performed the contract on its part to be perfoi’med; and that, consequently, the price for the pipe delivered can only be recovered in an action of indebitatus assumpsit. But in this contention we do not concur. The pipe, the price of which is sued for, was manufactured, delivered, and accepted, under the contract, in part performance thereof, and with reference to the specifications and price agreed upon, as set forth in the contract. Why, then, should an action of *220covenant not lie on the contract for the price of the pipe actually delivered and accepted, if proper averments be made and proof furnished, showing why full performance was not had ? There would seem to be no sufficient reason for denying the right to maintain the action.
There was a similar question raised and considered in the case of Hall v. Cazenove, supra, that being an action of covenant on a charter-party for freight earned. There the charter-party bore date the 6th of February, but it was averred not to have been executed in fact until the 15th of March, and it contained a covenant by the owner that the ship should and would proceed from the port, where she then lay, on or before the 18th of February, on her outward bound voyage, and upon delivery of her outward cargo, take on cargo and return, etc., and the freighter covenanted that, in consideration of everything above mentioned, etc., he would pay certain freight for the voyage. The voyage was averred to'have been performed and the freight earned ; and it was held on demurrer, that the owner was entitled to recover in an action of covenant, without averring that the ship sailed on or before the 18th of February, that the covenant that the ship should sail on or before the 12th of February being either no condition precedent, but only an independent covenant, or not of the substance of the contract, which was for the performance of the voyage for which the ship was chartered and earning the freight; or being rendered impossible to be performed by the acts of the parties themselves, in not having executed the contract till after the time appointed for doing the act, and,thereby dispensing with the performance of it; therefore the defendant’s plea of non-performance by the plaintiff of the alleged" condition precedent, that is, the sailing of the ship on or before the 18th of February, constituted no defense to the action. And in delivering his opinion, Mr. Justice Lawrence said: “If the voyage has been performed, and the profits of it gained by the defendent, there can be no foundation for *221saying that the defendant shall not pay the freight earned.”
The general principle is applicable in all classes of contracts, whether under seal or not, that if the party to the contract who is entitled to the benefit of a condition upon the performance of which his responsibility is to arise, dispense with, or waive, or by any act of his own, prevent the performance, the opposite party is excused from proving a strict compliance with the condition on his part. This is illustrated in cases of frequent occurrence in all forms of actions on contracts. Thus, if the precedent act is to be performed at a certain time or place, and a strict performance of it is prevented by the absence of the party who has a right to claim it, or his want of readiness to accept the work or article to be furnished, or his non-observance of the conditions that are precedent and required to the performance of the contract on the part of the other party to the contract, the law will not permit that party to set up the non-performance of the condition as a bar to the recovery on the covenant or other form of responsibility, which the contract had imposed upon him. This is a settled principle in the law, sustained by numerous authorities, and we do not deem it necessary to refer to other cases upon the subject than Williams v. Bank of U. S., 2 Pet. 96, 101, and United States v. Peck, 102 U. S. 64.
4. In refusing to grant the prayer of the defendant in respect to the right to charge up and deduct from the price of the pipe delivered, the aggregate amount of penalties and forfeitures supposed to have been incurred for the delay in the delivery of the pipe under the contract, we think the ' court was entirely correct.
That prayer completely ignored all the evidence in regard to the causes of delay, and proceeded upon the theory that the right to the penalties and forfeitures was a fixed right that could not be waived, and therefore the defendant was entitled to have them deducted, even though the amount might more than counterbalance the entire amount of the *222price of the pipe delivered, and sued for in this action. But we think the question of the right to such penalties and forfeitures was correctly and fairly submitted to the jury, bj’- the two last' of the plaintiff’s prayers which were granted by the court. If the strict performance of the contract, on the part of the plaintiff, was prevented by the act or course of conduct of the defendant, or was suspended by the action or acquiescence of the defendant, no claim can be justly made for penalties or forfeitures under the contract, for such delay or failure to deliver the pipe. This would seem to be the simple dictate of reason and justice; and it is, moreover, in accordance with express decision upon the subject. Holme v. Guppy, 3 M. & Wels. 387, 389.
5. With respect to the question as to the right of the plaintiff to be allowed interest on the claim sued for, we think tliqre is no ground for assignment of error on this appeal. The court was clearly right in refusing, on the request of the defendant, to instruct the j ury that no interest should be allowed, except from the time of the institution of the suit. In the instruction given the jury on the subject of interest, the court submitted to them the question whether, under all the circumstances of the case, the defendant should pay interest upon whatever amount that should be found to be due the plaintiff from the 27th day of February, 1888, the time when the last delivery of the pipe was made, and the money became due; or whether it should pay interest from a later date. We think this instruction was correct, and the court committed no error in refusing to grant the instruction prayed for by the defendant.
Finding no error, the judgment appealed from must be affirmed; and it is so ordered.
Judgment affirmed,.