So-Called Dollars are a category of collectible medallions and coins that commemorate events, places, or individuals, often issued by private entities rather than the U.S. government. The term primarily refers to pieces that resemble dollar coins but do not circulate as legal tender. The Hibler and Kappen catalog, published in the mid-20th century, serves as a key reference for collectors, detailing various issues including those from 1892. The category includes both official medallions and private tokens issued during significant events or anniversaries in U.S. history.