So-Called Dollars are a unique category of commemorative medals or tokens that originated in the United States during the late 19th and early 20th centuries. Despite their name, they are not official U.S. currency but were often produced to mark significant events, anniversaries, or expos. Designated with the SC number in the "So-Called Dollars" reference books, they are collected for their historical significance and intricate designs, often reflecting the socio-political climate of their time. The term primarily refers to pieces minted between 1860 and 1960, with a focus on those related to U.S. history and culture.