Hub and Die Errors
In order to produce coins, a mint needs something to strike it with. They take a steel rod and imprint the coin's design in it with a hub bearing a relief image of the design.
Hub and die errors are collectively known as varieties. If damage or some form of alteration is made to a hub or die, it is classified a variety. Modern coins are still released with hub and die errors, mainly because the defects are usually too small to be seen with the naked eye. A few exceptions exist, where the dies are used despite producing easily visible flaws. The 1955 Lincoln cent is an example.
Read more about this topic: Mint-made Errors
Famous quotes containing the words hub and, hub, die and/or errors:
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—Elizabeth Marshall Thomas. “Strong and Sensitive Cats,” Atlantic Monthly (July 1994)
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—Allen Tate (1899–1979)
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Who listened to his voice, obeyed his cry?
Only the echoes, which he made relent,
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—William Drummond, of Hawthornden (1585–1649)