20 for 4 Sets. This is a set of four 1971 United States proof coins that are uncirculated. The coins were struck in San Francisco and come with certification from the U.S. Mint. These coins are a great addition to any collection for collectors who appreciate the beauty of uncirculated coins. The set includes coins from different denominations and features a range of designs that showcase the artistic side of coin collecting. Add these coins to your collection today and enjoy the thrill of owning a piece of American history.