So-Called Dollars are a type of medal or token that originated in the United States, primarily produced for commemorative purposes rather than as currency. The term is often associated with pieces made during the 19th and early 20th centuries, but the 1952 So-Called Dollars were specifically created in conjunction with events such as the American Numismatic Association's annual convention. These pieces are typically made of various metals and are cataloged according to the Taxonomy of So-Called Dollars, which includes details about their design, purpose, and historical significance. Collectors often seek these items for their artistic value and connection to U.S. history.