No mintmark always equals Philadelphia?
cinque1543
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I know that on circulating coinage, the absence of a mintmark indicates that a coin was minted in Philadelphia. Is the same always true on non-circulating coinage, such as American Gold Eagles and the 1926 Sesquicentennial commemorative coin?
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Generally, yes. One exception that I can think of is the 1922 cent where the D mintmark was removed by over polishing the die.
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Lots of circulating coins with no mintmarks were minted elsewhere. West Point minted cents in the 1970's. Then there's the obvious 1965-1967 coinage etc. SMS sets were minted in SF also.
A portion of 1840 half dollars without a mintmark were minted in New Orleans.
They've done a lot of eagles at West Point with no mint mark
The Pilgrim commem has what appears to be a “D” mint mark but was actually
Minted in Philly. In this case, the “D” stands for Cyrus Dallin, the coin’s designer.
Certain years for ASE’s had no mint mark but were minted in San Francisco.
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Interesting. So I guess "no mintmark" means, at best, that a coin likely was minted in Philadelphia. Thanks.
I think that statement gives the wrong impression.
With a few exceptions, such as those mentioned above, lack of a mintmark is a definite indicator that a coin was minted in Philadelphia - not "likely minted", but definitely minted. The exceptions are known and only in those specifics cases is there an alternate scenario.
1968 and 1970 San Francisco proof dimes without S mint mark.
Fort Vancouver half, minted in SF without a mint mark.
You forgot 1975 no S
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And the 1983 no S
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Don't forget the Mysterious 40% Silver Bicentennial Proofs (Type One Quarter and Half, Types One and Two Dollars) struck without an S mint mark, where the lack of a mint mark may indeed mean a Philadelphia strike!
While I think this is mostly correct, it does understate the number of exceptions. For example, West Point minted circulation cents for 10+ years that have no mintmark. They also minted quarters for a couple of years in the 1970s, I believe. I'm not sure what other service work they might have done on circulating coins.
There also were the 1942-1945 35% Silver Jefferson “War Nickels” minted during WWII, that display a large Mint Mark (P, D or S) on the reverse over Monticello.
These are significant the only US coins (that I’m aware of) displaying a “P” mint mark.
They were composed of 56% copper, 35% silver, and 9% manganese. Nickel was prioritized a Strategic Metal for the war effort, thus eliminated from US Nickel 5 Cent Piece during those years.
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The 2017-P Lincoln cents did display the “P” mint mark.
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