Collectible coins refer to various types of coins valued for their rarity, historical significance, or aesthetic appeal rather than their face value. In the United States, collectible coins include So-Called Half Dollars, which are medals or tokens often commemorating events or notable figures. Heraldic Art Medals, another category, typically feature designs inspired by heraldic symbols and may include unique artistic representations. The year 1966 holds significance for certain collectible coins, particularly in relation to transitional designs or special commemorative issues. "Unknown" may refer to coins or medals with unclear origins or less documented histories, posing intriguing challenges for collectors.

Item Denomination Series Year Mint
1966 Silver Indiana Statehood 150th Sc50c Ms Other / Varied So-Called Half Dollars & Heraldic Art Medals 1966 Unknown