According to Wikipedia: I know Wikipedia can be wrong. If this is true, what rare dates were found in this stash? I assume most of these coins were collected and are still in BU condition today. Were there any peace dollars or other silver dollars included in these coins?
The stash were all BU coins. Minted and then stored, never circulated. One of the big finds, if memory serves, was the 1903-O, which up to that time was considered a rare key date. Prices were ~$1500 for the coin at the time and the prices plunged. People could go to the treasury and exchange $1000 for a bag of Morgans. I don't believe there were any Peace Dollars, but I might be mistaken.
It must have been exciting. I still dream of a huge stash of 1964 dollar coins being discovered in a vault somewhere....
The 01-O and 98-O were also considered scarce until they were discovered by the bagful in the Treasury releases. Chris
Unless, by "stash" you mean one or two dozen, that wouldn't happen. After all, even if the supposed 1964 Peace Dollar exists, there'd be a very limited number of them that would have been struck for the purpose of review by members of some committee or sub-committee in Congress.
As some have already mentioned, the 1903 O was the coin that used to be a super-key date, especially in uncirculated grades. When the Treasury released bags of uncirculated 1903 O Morgans, it became a fairly common semi key date overnight. I've read Q David Bower's book on Morgan Dollars, and if I recall correctly, some unscrupulous scheisters went overseas to England, where word of the newly discovered bags was not yet common knowledge, and made a killing selling now common date 1903 Os at key date prices.
Here is all that you will ever need to know about the treasury releases of the early 60's. http://www.pcgs.com/books/silver-dollars/Chapter14-001.aspx It's the best read I have ever seen on the topic with many testimonials.
Heck I'd buy any and all at these prices even circulated common date are below melt and notice 03-o more than 89-cc and 93-s neither of those were found in vaults tho
According to http://www.pcgs.com/News/1964-d-Peace-Dollars-Do-They-Really-Exist, they struck just over 316,000 of them, but they were melted down. Would be exciting if a bag or two of those survived....
There were example of all 13 CC Morgan dollars in the GSA sales, but only a single example of three of them. 1889, 1892 and 1893. Those three coins were randomly sent out in the Mixed CC catagory at $15 each. Two of them are known today still in their OGP, the third has never been reported. Sorry I don't remember which two are still in OGP. No 1893-S dollars were in the GSA sales, but some did come to light in the Treasury distributions before the 1964 cut off.