The following types are nomenclature used by collectors since no FED 1 or Fedka camera was actually marked in this way. Brief descriptions are included to help with identification. • 1a 1934–1935 SN 31- 6000 (some sights have been done on early style, read 1a, cameras up to number 6500. • 1b 1935–1937 SN 6000 – 55000 – Some with the
NKVD engraving "Peoples Commissariat of Internal Affairs", which was the new name for
Stalin's secret police. • 1c 1937–1939 SN 55000 – 125000 – In 1937 a triangular cam-follower replaced the circular Leica-type cam follower and the speed dial was modified slightly to resemble the Leica II. • S 1938–1941 – Identical to 1c except that 2000 cameras were produced with a faster 1/1000"
shutter speed. • V (B) 1938 – Identical to 1c except with a faster 1/1000" second shutter speed and a slow-speed dial. • 1d 1939–1941 (August) SN 125000 – 180000 – Identifiable by the centre retaining screw being off-centre and not concealed by the lens-mount flange. In addition, in 1939
Ukraine. • 1d 1942–1945 SN 174000 – 178000 – Around 4000 cameras manufactured in
Berdsk from parts evacuated from the FED Ukraine factory before it was overrun by the Nazis. • 1e SN 174000 – 180000 – Manufactured in Berdsk in
Siberia in the first few months of 1946 after hostilities ended, using parts made before the war. • T Engraved "Red Flag" in honour of new masters produced around SN 200000 and was fitted with a coated 50 mm Industar 10 lens • 1f 1949–1953 SN 201800 – 400000 – New cursive-script Fed logo, flatter shutter button, coated lens engraved with what were then called the international f stops, , and so on rather than the earlier , . • 1949–1950 TSVVS – Two major circulating theories is that the cameras has either been manufactured at Moscow's Almaz factory or it had been ordered for manufacture by the Soviets from East Germany (possibly Zeiss, but it is also not confirmed). This camera is probably the most mysterious in nature out of all Soviet cameras. An old belief that this camera was made by FED factory is disputed by the fact that the body is wholly made out of brass and it is different dimensions physically than the FED-1 cameras. (see forum discussions at USSRPhoto.com for more detailed arguments about it between various Soviet camera experts). • 1g 1953–1955 SN 400000 – 800000 – Shutter speeds changed to 25th, 50th,100th instead of old Leica 20th, 30th, 40th, 60th. ==FED 1 serial numbers and production numbers==