"Double die" redirects here. For the urological test, see double dye test.
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Doubled die (also known as hub doubling) is a term in numismatics used to refer to a duplication of design elements on a working die created due to a misalignment of the die or hub during the hubbing process. Strength of the doubling can vary from very slight and isolated to extreme and widespread. The exact cause of the doubling can also vary, which is why a class system was created to outline the known and hypothesized causes.
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]
This term is commonly misspelled "double die."
^"1955 DDO Lincoln Cent Sells for $124k at GreatCollections.com". CoinWeek.com. CoinWeek. 3 March 2020. Archived from the original on 23 September 2020. Retrieved 9 September 2020.
^"1955 1C DDO FS-101 (021.8), BN (Regular Strike) Lincoln Cent (Wheat Reverse) - PCGS CoinFacts". Archived from the original on 2021-01-23. Retrieved 2024-01-07.
Doubleddie (also known as hub doubling) is a term in numismatics used to refer to a duplication of design elements on a working die created due to a misalignment...
1955 doubleddie cent is a die variety that occurred during production of the one cent coin at the United States Mint in 1955. When a modern coin die is...
of slight doubling of the mint mark. Millions of these errors can be located on the internet for sale and are referred to as RPM’s Doubleddie coins are...
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movement of the die against the hub during the single squeeze hubbing process. Similarities exist between this anomaly and the doubleddie, however, the...
few months after Darcy's discoveries, an elated Bob finds a rare 1955 doubleddie cent, and the couple goes out to celebrate. When Bob becomes drunk from...
the cent. Several thousand 1955 pieces were struck with a doubleddie, and display doubling of the date. The Mint was aware of the pieces, and knew they...
Philadelphia Mint. Variants of the circulating coins include three 1862 doubleddie Dollar variants dubbed FS-101. It was noted that the 1861 dollars had...
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doublet of 6: sonnez ("ring the bells"). doubling cube, doublingdie An extra and slightly larger die used especially in modern Backgammon to raise the game...
Lincoln cent as an overdate variety, in addition to its previously known doubleddie status. The American Numismatic Association named one of their Young...
formed by a working die struck once from a 1942-dated master die, and once from one dated 1943. Some 1946 half dollars show a doubleddie on the reverse....
1942/41 is generally termed an overdate; it is actually a doubleddie error—the obverse die from which the coins were struck took one impression from...
1943), Indian head cents (1859–1909), and errors and varieties such as doubleddies and close and wide “AM” cents. Some searchers also save copper memorial...
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permit doubled blocks to be passed by rolling a 6 or 1. A block of two or more pieces cannot be taken by an opponent's single piece. Doubled pieces may...
intelligence service) into a double agent (working for a foreign intelligence service) or a double agent into a re-doubled agent. It is unlike a defector...
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coin with a "doubled" image. doubleddie A die that received two misaligned impressions from a hub; more commonly, a coin struck by such a die. doubloon...
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