So-Called Dollars are a type of exonumia, which refers to coins or medallions that are not legal tender but are created to commemorate events, people, or places. The term was popularized by the Hibler and Kappen reference book, which catalogs these pieces. Specifically, the So-Called Dollars from around 1940 reflect various historical and cultural events in the United States and often have limited mintage and specific designs. Collectors value them for their artistic merit, historical significance, and rarity.

Item Denomination Series Year Mint
1940 Ca Hk-483 Petroleum Dollar Sc$1 Ms Other / Varied So-Called Dollars - Hibler & Kappen 1940 Unknown