Leon Rockwell and Myrtle Rockwell were married on April 25, 1947. Leon and Myrtle each had children by previous marriages. On February 4,1957 the couple executed a post-nuptial contract in which each agreed not to claim any part of the other’s estate. Plaintiff expressly relinquished “all claim to any allowance, dower, homestead, or any other right in and to the real or personal estate” of Leon Rockwell. The intention of the parties to the contract was that their marriage should not alter the legal rights of their children from their prior marriages in the real and personal property of each of them. The agreement provided that each of their estates would rest in the heirs as determined by will or as if no marriage had taken place. On January 18,1965, Leon Rockwell published a will bequeathing to plaintiff an amount less than that to which she would be entitled under an election. Two years later Leon Rockwell died. On July 3, 1967, plaintiff filed in the Benzie County Probate Court her election to take against the will pursuant to MCLA § 702.69 (Stat Ann 1962 Rev § 27.3178[139]). On January 8, 1968, plaintiff filed with the probate court a petition for a widow’s allowance. The estate filed objections to the petition. On March 29, 1968, the probate court dismissed plaintiff’s petition for widow’s allowance, struck her election, and held the post-nuptial agreement valid. Contending that the agreement was invalid for lack of consideration and because it was contrary to public policy, plaintiff sought review in the circuit court for Benzie County. The circuit court affirmed the probate court’s hold*596ing, and leave to appeal was granted by this Court on May 29, 1969.
On appeal, plaintiff raises two issues:
1. Whether a post-nuptial contract is invalid because contrary to public policy.
2. Whether a post-nuptial contract fails for lack of consideration when the husband only waives any claim in the future estate of his wife should he be the survivor.
I.
Post-nuptial agreements are not invalid per se. In the majority of jurisdictions, including Michigan, a post-nuptial agreement by a wife to release her interest in her husband’s property on his death is valid if it is fair and equitable and supported by sufficient legal consideration. 49 ALR 116, 122, citing Randall v. Randall (1877), 37 Mich 563; Rhoades v. Davis (1883), 51 Mich 306; Owen v. Yale (1889), 75 Mich 256; Wright v. Wright (1890), 79 Mich 527; Dakin v. Dakin (1893), 97 Mich 284; Chittock v. Chittock (1894), 101 Mich 367; Bechtel v. Barton (1907), 147 Mich 318; La Plant v. Lester (1907), 150 Mich 336. See, also, Const 1963, art 10, § 1; MCLA § 558.13 (Stat Ann 1957 Rev § 26.229) M & D Robinson Company v. Dunitz (1968), 12 Mich App 5.
There are several situations in which Michigan Law recognizes the validity of agreements such as the one involved in the instant case. Post-nuptial agreements made during an existing separation are thought to further judicial policy favoring settlement of controversies over litigation. In re Berner’s Estate (1922), 217 Mich 612. In addition, Michigan is one of the majority of jurisdictions that approve post-nuptial agreements in which a wife releases her interest in her husband’s property on his death (see Const 1963, art 10, § 1, and MCLA § 558.13 [Stat *597Ann 1957 Rev § 26.229]), if it is a fair and voluntary one for a fair consideration. Wright v. Wright, supra. See, also, 49 ALR 116, 122. However, objections are validly raised to post-nuptial agreements where those agreements seek to effectuate a separation or contemplate a future separation. In re Berner’s Estate, supra, at p 620. Plaintiff contends, citing language from Day v. Chamberlain (1923), 223 Mich 278, that the present case is within this latter category. Bay, however, is distinguishable in that the preamble of the agreement held invalid in Bay made it clear that the parties contemplated a separation in the near future. The present case involves no thought of such a separation.1
The public policy objection to post-nuptial contracts pointed out by the Court in Randall v. Randall (see footnote 1) and raised by plaintiff here does not arise in this case. The instant agreement did not undertake to provide for a separation. There is nothing in this record to suggest that the agreement was calculated to bring about a separation. Nor is there anything in this record to suggest that a separation was contemplated by the parties. To the contrary is the statement in the agreed facts that “at all times during this marriage * * * the parties lived together amicably and peaceably without dis*598pute or controversy”'. The fact is that the parties lived as husband and wife for 10 years after the agreement was executed and until the husband’s death.
The circuit court rejected plaintiff’s argument that the agreement encouraged possible separation: “No authority is cited indicating that a post-nuptial contract is inherently disruptive of the marital state and hence suspect”. In Ransford v. Yens (1965), 374 Mich 110, the justices of the Michigan Supreme Court voting for affirmance, in particularly applicable language, said:
“[T]he parties now before this Court entered into said agreement with the hopes that the marital journey they had commenced as rather elderly people would continue on without discord if they eliminated the only dispute or problem they faced, namely: The eventual disposition of property owned severally at the time of marriage as well as that acquired jointly during the marriage.” 374 Mich at p 116.
The absence of intention of the parties to separate was determinative in Ransford v. Yens, supra, which affirmed, by an equally divided court, the circuit court’s validation of a post-nuptial agreement by which the parties relinquished for sufficient legal consideration their claims to the other’s separate estates. Four justices affirmed in Ransford, finding that the intention of the parties was to provide for the eventual amicable disposition of their property. The holding for affirmance was made in spite of two provisions of the agreement which looked to the possibility of a divorce.2
*599The instant agreement does not contain any reference to separation found offensive in Bansford. Indeed, it was entered into for a purpose found salutary in Bansford, namely, to provide for disposition of property favoring the children by previous marriages of the parties.
II.
It is plaintiff’s contention that the post-nuptial contract lacked sufficient consideration in that the husband’s promise to relinquish any right in his wife’s estate even in exchange for the wife’s promise to relinquish her dower and widow’s allowance amounted to nothing since he had no such right. The circuit court thought the mutual promises of the parties contained in the agreement constituted adequate consideration for the contracts, citing for this proposition Keller v. Keller (1926), 121 Kan 520 (247 P 433). The trial court on the basis of Keller felt that since neither of the parties had executed wills at the time of the agreement, each was waiving a share in the estate of the other to which he or she would have been entitled under the laws of intestate succession. Plaintiff argues that if such an analysis is followed, each party gave up only a possibility and not a present interest amounting to consideration.3
Michigan cases have discussed consideration in post-nuptial contracts in terms of dollar valuation and the Michigan Supreme Court has approved agreements where dollar amounts or an equivalent flowed to the wife in return for her release. Thus, in Randall v. Randall (1877), 37 Mich 563, $1,000 was “sufficient”, and in Rhoades v. Davis (1883), 51 Mich 306, $900 was “good” consideration. In the *600more recent Hansford, case, $4,600 was acceptable for release as to property worth $6,000 at the husband’s death. In Wright v. Wright, supra, the Michigan Supreme Court said, “there is no legal objection to an arrangement between husband and wife, for a fair consideration, to extinguish her right of dower.” Plaintiff makes a strong case by relying on the decision in Wright. She gave up her prospective dower, allowing her husband to make a will giving her nothing in return for a waiver by her husband of his curtesy right, one not recognized by Michigan law. In return for a waiver of nothing more than an expectation, plaintiff argues, of a possible future inheritance by intestacy, the wife relinquished a statutorily defined and protected right. It is plaintiff’s contention that the post-nuptial contract in the present case attempts to achieve that result which was overturned in Wright.
Under the facts as found in the present case, we must hold for the Estate of Leon Rockwell. In so doing we do not mean to overturn the line of case precedent cited supra. However, what we find here is that there was “fair consideration” flowing to plaintiff. Myrtle and Leon Rockwell each came to their marriage with children by previous marriages. It was their intention by enacting a post-nuptial agreement to insure the sanctity of their estates for their own children by those previous marriages. While it is true that Leon Rockwell gave up merely an expectancy, it is also true that he gave up the right to any share of Myrtle’s estate upon the event that Myrtle, should she predecease Leon, would have her will contested and found inadequate at probate. It is further true that Leon could have by trust and gift given to his children that which he thought was *601protected by the post-nuptial agreement.4 Now that Leon is deceased, it seems somewhat unjust to say that Myrtle has the option of contesting the post-nuptial agreement or allowing it to stand. Had Myrtle predeceased Leon, it is doubtful that he could have come into court and argued that since he had given inadequate consideration, the post-nuptial agreement must fail. Therefore, Myrtle seemingly, were we to accept plaintiff’s position, would have the option upon Leon’s death of upholding the post-nuptial agreement or refuting it. In the instant case there is testimony to the effect that Leon’s estate appreciated greatly after the post-nuptial agreement while Myrtle’s did not. In our view, a party to a post-nuptial agreement cannot sit idly by and wait to see which estate appreciates or diminishes before opting to act within the framework of the post-nuptial agreement or to refute it. While it is true that the statutorily given right of dower and homestead are important ones and must be protected by our courts, in the present case we find that Leon’s forbearance from distributing his estate by any method other than under the post-nuptial agreement should not be set aside at this late date. Accordingly, we affirm the order of the probate court and the opinion of the Benzie County Circuit Court.
Affirmed.
One commentator has thought that to deny a husband and wife the right to adjust property rights “might easily tend to foster the undesirable separation.” Kunz, Family Law, 12 Wayne L Key 319, 339 (1965). Indeed, going even further (as noted supra), Michigan recognizes post-nuptial agreements made during existing separation of married persons. See In re Berner’s Estate (1922), 217 Mich 612, and Randall v. Randall (1877), 37 Mich 563. Bandall points out, the objection to post-nuptial agreements:
“The chief difficulties with such contracts are encountered when they undertake to provide for a separation of the parties and a breaking up of the marriage either with or without a divorce. It is not the policy of the law to encourage such separations, or to favor them by supporting such arrangements as are calculated to bring them about. It has accordingly been decided that articles calculated to favor a separation which has not yet taken place will not be supported * * * ”. p 571.
The justices for reversal felt that the agreement was void as against public policy because it anticipated a possible future separation.
In further support of the trial court’s decision, see Ransford v. Yens, supra, Carmichael v. Carmichael (1888), 72 Mich 76, and George v. Conklin (1960), 358 Mich 301.
In that respect it might be argued that he relied upon the post-nuptial agreement.