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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 1955 DDO (double die) Lincoln Penny owes its rarity to a misalignment during the minting process that created a “double image” effect on the coin’s obverse. A pristine DDO Lincoln Cent ...
A doubled die occurs when a die receives an additional, misaligned impression from the hub. Overdate coins such as the 1942/1 U.S. Mercury dime and 1918/7 U.S. buffalo nickel are also doubled dies. They are both listed by CONECA as class III doubled dies. [4] Class III means the die was hubbed with different "designs" (or hubs that had ...
Doubled die varieties, when noticeable to the naked eye or occur in a popular coin series, are extremely popular with collectors and can be worth a large premium over the same coin without the doubling. The most popular doubled die variety would be the 1955 US cent doubled die [1] which typically sells for over $1000 at auction. [2]
The NGC Price Guide states: “The 1972 Doubled Die obverse Lincoln cent is very popular among collectors. The coins have quite a large spread on the doubling, which is quite evident throughout ...
The mint mark on the coin is currently located on the obverse at the bottom right hemisphere under the supposed date. In 1965–1967 cupro-nickel coins bore no mint mark; quarters minted in 1968–1979 were stamped with a "D" for the Denver mint, an "S" for the San Francisco mint (proof coins only), or blank for Philadelphia.
However, it too wears the dies when they are used for too long. An infamous example is the 1955 "poorman’s double die." This coin is sold as a replacement for the 1955 doubled die cent, but it is no more than Die Deterioration Doubling, caused by wear on the dies. When a coin is struck, the planchet is not heated. Although the planchet would ...
932,780,000 of these were struck in 1965 D 3,799,071,500 1,933,908,100 of these were struck in 1965 (S) ... Double-Die varieties have been found [14] (P)