Collectible coins, particularly in the United States, include a variety of denominations such as the 1 cent (penny) and 50 cent (half dollar). Proof sets, introduced in the U.S. Mint, showcase coins struck with a higher quality finish, resulting in a mirror-like surface and sharper details. The 1961 Proof Set is notable for containing coins that exhibit unique characteristics and is sought after by collectors for its historical significance and aesthetic appeal.

Item Denomination Series Year Mint
1961 1c-50c Proof Set 1c-50c Proof Sets 1961 Philadelphia