Collectible coins encompass a variety of types, including numismatic coins, commemoratives, and bullion coins. In the context of the United States, collectible coins often feature denominations such as 1 cent (penny) and 50 cents (half dollar). Proof sets, particularly those from 1968, are highly sought after; they include coins that are struck with a higher quality finish, featuring a mirror-like background and sharp detail. These proof coins are produced for collectors and are distinct from regular circulation coins.

Item Denomination Series Year Mint
1968-S 1c-50c Proof Set 1c-50c Proof Sets 1968 San Francisco