If the clause in question is a penalty, then it is settled law that that alone is not sufficient to deny a right to specific performance in a court of equity. 1 Pomery’s Equity Jurisprudence, (3d Ed.) p. 748. Where there is in an agreement of sale a provision clearly showing that a party to the contract may either perform it or pay a sum of money, then as there is an alternative duty, he cannot be compelled to perform the duty he declines to perfrom, when he chooses to perform the other alternative. A provision in an agreement of sale of land, whatever it is called in the agreement, whether a penalty or liquidated damages, and which is clearly neither, but is annexed for the purpose of securing performance of the contract, entitles either party to a decree of specific performance. Koch v. Streuter, 218 Ill. 546, 75 N. E. 1049, 2 L. R. A. (N. S.) 210; Barrett v. Geisinger, 179 Ill. 240, 53 N. E. 576; Powell v. Dwyer, 149 Mich. 141, 112 N. W. 499, 11 L. R. A. (N. S.) 978.
The clause in question is not stated to be either a penalty or liquidated damages. There is in it no direct statement that the seller may refuse to convey on paying the buyer $100, nor does it say that either party may default and be relieved of any obligation to perform by paying the other party $100. It is clearly a provision intended to secure performance of the contract. Indeed, it expressly says so. It says, for the true performance of the contract each party binds himself to the other in a certain sum of money. In a court of law this may entitle the buyer to sue the defaulting seller, for that sum if the buyer wants to end the agreement. In such case it makes no difference that it is .called “penal” sum. The right to the money is one which the buyer has if he elects to take it, or collect it in settlement of his rights against the seller. But if he does not choose to so settle the matter he has an indubitable right to either an action for damages or specific performance. It would be strange if a provision of a contract purporting to be inserted in order to secure performance should *55be effective to defeat an effort of one party to enforce specific performance of the contract.
Inasmuch as the meaning of the clause is clear and unambiguous, and the words used reasonably capable of but one interpretation, it is immaterial what view persons engaged in the sale of real estate in this city take of the meaning of the words, or their practice, or custom, or intention with respect thereto. It is not the case of proving a custom of the trade with respect to a matter not disclosed in the contract, as in the case of Fraser v. Ross, 1 Pennewill, 348, 41 Atl. 204, or as showing the course of conduct of an individual in honoring as his obligation to pay money a certain kind of card with his name and an amount of money named thereon, being the check, ticket or token given by him in payment for work done, as for instance by pickers' of berries. Bryan v. Brown, 3 Pennewill, 504, 53 Atl. 55. The testimony which the defendant offered to produce as to the custom of dealers in Wilmington to regard the clause in question as giving to the seller a right to be free of his obligation to convey by paying the sum mentioned in like clauses, was clearly inadmissible and inapplicable to a clause, the meaning and intention of which was so clear.
Note. — All of the questions of law and fact involved in this cause were raised at the hearing of the rule for a preliminary injunction, and after stating the foregoing conclusions to the solicitors for the respective parties a conveyance was made by the defendant to the complainant of the premises and the bill of complaint dismissed on motion of the solicitor for the complainant.