1968 to 1998 Proof Set U.S. Mint 31 Proof Set San Francisco Mint COA Popular

COA is always included when issued by US Mint. Issued from 1986 to date. 1968 5 coin Proof Set. 1969 5 coin Proof Set. 1970 5 coin Proof Set. 1971 5 coin Proof Set. 1972 5 coin Proof Set. 1973 6 coin Proof Set.

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