Mint was preparing for the Bicentennial issue. None were minted in 1975, due to the fact that the U.S. This brings out the polished mirror background and high-relief details.īoth of the Blue and Brown packs were struck each year from 1971-1974. Proof coins are the highest quality possible, because each coin is struck at least twice under tremendous pressure. So as not to confuse the silver coins with the circulation-strike copper-nickel coins, they were issued exclusively to collectors in unique packaging. 400 silver coins, it actually created two different versions: Proof and Brilliant Uncirculated. When the United States Mint in San Fransisco struck the. These deep mirror proofs make an excellent addition to your first year of issue collection. The United States Mint also issued a small number of Silver Proof Eisenhower Dollars in 1971 as well.
