Heritage 12/2010:3504, $4,887
Jaime Hernandez: In 1964 the U.S. Mint struck circulation strike coins, proof coins and surprisingly, it also struck a very limited number of Special Strike coins also referred to as Special l Mint Sets (SMS). It is believed that only about a couple dozen sets of Special Strike coins were struck in 1964. However, to this date it is a complete mystery as to why these coins were ever produced.
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