So-Called Dollars are a type of commemorative medal or token, often made from silver or bronze, that were issued to commemorate significant events, individuals, or anniversaries. In the context of United States numismatics, the term "So-Called Dollar" generally refers to pieces that are cataloged in the "So-Called Dollars" guide by Harold E. J. Gardner, with the most notable issues dating back to the mid-19th century, including the 1859 pieces. The phrase “One Dollar” in this context can be misleading, as these items were not official currency but are treated as collectible coins.