So-Called Dollars are a type of commemorative medal or token that were primarily produced in the United States, often celebrating specific events or individuals. The term is derived from the name "dollar" used colloquially for these items, despite them not being official currency. One notable example is the 1918 So-Called Dollar, which commemorates the Panama-Pacific International Exposition, reflecting American ingenuity and the celebration of the completion of the Panama Canal. These collectibles appeal to numismatists for their historical significance and artistic design.