1968 through 1998 PROOF sets – Plus 1976 Silver Proof Set-Lot of 32 Sets-Box/COA. 1976 Bicentennial Silver Proof Set. Lot of 32 Sets. All sets come with original government packaging as pictured. All Proof and Mint Sets Available at. Visit Timer’s Coins. Track Page Views With. Auctiva’s FREE Counter. The item “1968 through 1998 PROOF […]