1968 to 1998 Proof Sets U. Mint 31 Proof set San Francisco Mint Box & COA. The coins in the Pictures are not the exact coins that you will receive. They are however a good representation of what you will receive. 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. 1974 6 coin Proof Set. 1975 6 coin Proof Set. 1976 6 coin Proof Set. 1977 6 coin Proof Set. 1978 6 coin Proof Set. 1979 6 coin Proof Set. 1980 5 coin Proof Set. 1981 5 coin Proof Set. 1982 5 coin Proof Set. 1983 5 coin Proof Set. 1984 5 coin Proof Set. 1985 5 coin Proof Set. 1986 5 coin Proof Set. 1987 5 coin Proof Set. 1988 5 coin Proof Set. 1989 5 coin Proof Set. 1990 5 coin Proof Set. 1991 5 coin Proof Set. 1992 5 coin Proof Set. 1993 5 coin Proof Set. 1994 5 coin Proof Set. 1995 5 coin Proof Set. 1996 5 coin Proof Set. 1997 5 coin Proof Set. 1998 5 coin Proof Set.