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A well known example of a small mint mark is 1945-S "Micro S" U.S. Mercury dime, when the mint used an old puncheon intended for Philippines coins. [14] A much rarer example is the 1892-O "Micro O" U.S. Barber half dollar , which may have come about from the brief use of a mintmark puncheon intended for the quarter. [ 15 ]
Doubled die coins are mainly created by a defective hub which is used to create many dies for the minting process. Collectors classify doubled dies as DDO (doubled die obverse coins), DDR (doubled die reverse) and OMM (over mint mark). The over mint mark is created when a one date and mint mark is punched over another date, part of a date, or ...
6. 1982 and 1983 Roosevelt Dimes, No Mint Mark Some dimes from 1982 and 1983 were minted without a mint mark, and these varieties can be of interest to collectors.
The 1955 dimes from the three facilities are the lowest mintages by date and mint mark among circulating coins in the series, but are not rare, as collectors stored them away in rolls of 50. [28] With the Coinage Act of 1965, the Mint transitioned to striking clad coins, made from a sandwich of copper nickel around a core of pure copper.
You don’t usually see errors with proof coins, but there are exceptions. One involved 1975 dime proof sets, which that lacked an “S” mintmark (from the San Francisco Mint).
Jitalia17/istockphotoSome of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper ...
The small eagle on the reverse was added as an afterthought, when Mint officials realized that the Coinage Act of 1873 required one to be displayed on all coins of greater value than the dime. [9] The Mint sought comments on the designs from the Commission of Fine Arts, which was provided with a lead striking of the obverse and a view of the ...
The dime, struck by the U.S. Mint in San Francisco in 1975, is so valuable because it is just one of two dimes missing an "S" mark for San Francisco. Ohio sisters inherit dime with an obvious ...