The 1881 So-Called Dollar is a type of collectible medal, often categorized with coinage due to its dollar denomination and physical characteristics. These pieces were minted in commemoration of significant events and figures, and while they were not official currency, they are highly sought after by collectors. The term "So-Called Dollars" originates from the cataloging of these medals in a book by Harold Hibler and Charles Kappen, and the 1881 variant specifically honors the American centennial celebration. Collectors value these pieces for their historical context, artistry, and rarity within the numismatic community.