Ron Guth: The 1804 Spiked Chin Half Cent is an interesting variety caused when damage occured to an obverse die, resulting in a sharp, spike-like projection jutting out from Liberty's chin. The Spiked Chin itself is considered a die state, because examples from the same obverse die are known without the damage. However, the Spiked Chin obverse was used in combination with more than one reverse, so it is also known as a die variety. The Spiked Chin Half Cent is fairly common, but it commands a premium because of its listing as a major variety in most (if not all) price catalogs.
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