So-Called Dollars are a specialized category of collectible coins, primarily commemorative tokens issued during various historical events or exhibitions. The term originates from the 19th century, specifically referring to pieces that resemble dollar coins but were not intended for circulation. The 1940 So-Called Dollars are notable for being issued in conjunction with the 1939 New York World's Fair, featuring designs that commemorate the event or related themes. These tokens are sought after by collectors for their artistic significance and historical context.