So-Called Dollars are a category of commemorative medals and tokens that often resemble dollar coins but are not official currency. Originating in the United States in the late 19th and early 20th centuries, these pieces typically commemorate significant events, fairs, or individuals. The term "So-Called Dollar" was popularized by numismatist Harold J. McCulloch in the 20th century. The 1919 So-Called Dollar is notable for its connection to the 1915 Panama-Pacific International Exposition, celebrating America’s role in the Panama Canal's construction, and comes in various designs and materials.