So-Called Dollars are a type of commemorative medal or coin that generally measures one dollar in size but does not represent official currency. The term is commonly associated with pieces produced by private mints, organizations, or events to commemorate a specific occasion or entity. The Hibler-Kappen catalog lists various examples of these items, including the 1980 So-Called Dollar series, which reflects significant events or themes in American culture and history. These pieces are often collected for their artistic designs and historical significance, rather than for their monetary value.