1968 to 1998 Proof sets COA-12, Coa are issued from 1986 to 2011 (No Coa issued 1968 to 1985). No Coins empty box only. Empty Box Used Proof Sets No C oins. all empty boxes are used or pre-own, condition varies.

Certificate of Authenticity - COA Included from 1986 to date sets. 1971 11 Coin Mint set. 1972 11 Coin Mint set. 1973 13 Coin Mint set. 1974 13 Coin Mint set. 1975 12 Coin Mint set. 1976 12 Coin Mint set.

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.

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.