The 1956 Proof Set PCGS Proof 67 All Coins consist of coins from the United States struck in a proof finish in the year 1956. The set includes a variety of coins with a high level of quality and finish, making it a valuable addition to any collector's coin collection. Each coin in the set has been authenticated and graded by PCGS, ensuring its authenticity and condition. This set is a great representation of US coinage from 1956.