The F21 was allegedly used by the KGB for espionage purposes and made in the Krasnogorsk factory in Moscow from the 1960's - 1980's . It takes the form of a miniature "Robot" style camera with clockwork motor drive. 21mm wide un-sprocketed film is held in special cassettes giving an 18mm x 24mm frame size. Variations exist with CDS auto metering. It has also been found in various disguises and a remote release The version above was made in 1978 and is the basic camera.