The Borchardt C-93 (Construktion 93) semi-automatic pistol was designed by Hugo Borchardt (1844–1921) in 1893 based upon the Maxim toggle-bolt design.
The RB-1 Conestoga was a twin-engine, stainless steel cargo aircraft designed for the United States Navy during World War II by the Budd Company of Philadelphia, Pennsylvania.
C93 was a political party in Curaçao, the former Netherlands Antilles.
C93FM was a New Zealand radio station based in Christchurch.
The Convention concerning Wages, Hours of Work on Board Ship and Manning (or Wages, Hours of Work and Manning (Sea) Convention) is a convention of the International Labour Organization originally drafted in 1946 and revised conventions in 1949 and 1958, none of which entered into force.
Current 93 are a British experimental music group, working since the early 1980s in folk-based musical forms.
Monocytic leukemia is a type of myeloid leukemia characterized by a dominance of monocytes in the marrow.
The Ruy Lopez, also called the Spanish Opening or Spanish Game, is a chess opening characterised by the moves: The Ruy Lopez is named after 16th-century Spanish bishop Ruy López de Segura.