So-Called Dollars are a type of commemorative medal or token primarily associated with events or themes in American history, often designed to resemble coins but not intended to be used as currency. The term "So-Called Dollars" originates from a catalog published by numismatist Harold A. Auerbach in 1949, which classified these items, including those minted for the 1889 World's Fair in Chicago. The 1889 So-Called Dollar is particularly noteworthy as it commemorates the fair and features designs that reflect the cultural and technological advancements of the era. These pieces are collected for their historical significance and artistic value, appealing to both numismatists and historians.