So-Called Dollars are a category of commemorative coins and medals that are generally issued to commemorate specific events or notable figures, particularly in the United States. The term was popularized by the Hibler and Kappen reference book, which catalogs these coins. An example is the 1853 One Dollar piece, which is part of a larger set of medals that reflect historical moments, events, or organizations within American history. These items are often collected for their artistic design and historical significance rather than their face value.