So-Called Dollars are a category of collectible tokens and medals that were created primarily for commemorative purposes or as souvenirs relating to events, anniversaries, or various expositions. The Hibler and Kappen reference relates to a cataloging system for these items, particularly focusing on the issuance and variety of So-Called Dollars from the United States. The year 1915 is significant due to various commemorative issues, including those related to the Panama-Pacific International Exposition, which showcased numerous So-Called Dollar pieces celebrating the event.

Item Denomination Series Year Mint
1915 Ca Hk-1030 Panama-Pacific Expo Gold Sc$1 Pf Other / Varied So-Called Dollars - Hibler & Kappen 1915 Unknown
1915 Ca Hk-399 Panama-Pacific Exposition Sc$1 Ms Other / Varied So-Called Dollars - Hibler & Kappen 1915 Unknown