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A coin die (archaically spelt dye) is one of the two metallic pieces that are used to strike a coin, one per each side of the coin.
Die rotations cause coins to be minted with the reverse or obverse of the coin partially or fully rotated. A die rotation occurs when the dies become loose and they then turn. When a mint worker polishes a die to remove a die clash or some other defect there may be instances where a part of the design is removed.
In modern presses, a die strikes approximately 120 coins a minute. This is a large number of coins produced in a short time, and obviously the die cannot last forever. However, the process of wearing the die is only hastened by the metals used in coins. Nickel, one of the main metals used in today’s coins, is quite hard and causes wear ...
die crack A fine raised line on a coin that was caused by a crack in the die. [1] die defect An imperfection of various sorts caused by a damaged die. May refer to a crack or clash or a chip out of the die, etc. A defect from a chipped die is called a cud. [1] die marriage The combination of a particular obverse and reverse set of dies. If one ...
A VAM occurs as a result of a die variety which creates the same variation on a number of coins. [1] The discovery and cataloging of VAM dollars is concerned with small differences in coins. Leroy Van Allen (VA) and A. George Mallis (M) documented the small variations and VAM comes from the initials of their last names.
Coin grading [1] is the process of determining the grade or condition of a coin, one of the key factors in determining its collectible value. A coin's grade is generally determined by six criteria: strike, preservation, luster, color, attractiveness, and occasionally the country/state in which it was minted. Several grading systems have been ...
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Coin Die pair Discovered Notes 1 #1 May 2000 The "Discovery" specimen, owned by Tommy Bolack. Graded MS-66 by the PCGS. 2 #2 before July 2000 Owned by Bolack. Graded MS-67 by the NGC. 3 #2 before August 6, 2000 Owned by Bolack. Graded MS-66 by the NGC. 4 #1 before September 2000 Graded MS-65 by the PCGS. 5 #3 September 2000 Graded MS-67 by the ...