So-Called Dollars are a category of numismatic items, typically medallions or tokens, that commemorate events or people related to the United States. The term originated from a series of pieces that were minted to commemorate the 1892 Columbian Exposition. The 1952 So-Called Dollar refers to a specific piece created in connection with the 400th anniversary of Columbus's voyages, featuring designs that celebrate this historic event. While not official U.S. currency, these items are collected for their historical significance and artistic value.