Kodak Folding Brownie Six-20
620 Film
Circa 1937-1940

Kodak Folding Brownie Six-20
620 Film
Circa 1937-1940

Six-20 Brownie D
Circa 1946 -1953
620 film
The Argoflex Seventy-Five and Argus Seventy-Five were two name variants of the same model of pseudo TLR, produced by Argus in the USA, beginning in 1949.
The main body was molded from plastic (perhaps bakelite), while the film door is a painted metal casting. The front panel and viewfinder hood are in a contrasting satin-finish metal. A cloth neckstrap is permanently attached to the top of the body.
Images were 6x6cm on 620 film. While essentially a simple camera, it did feature double-exposure prevention, as well as a clever reminder when the film has been wound: A red-painted shutter blade is visible through the taking lens only after the shutter is cocked. Frame spacing relied on a simple red window, however.
From http://camera-wiki.org/wiki/Argus_Argoflex_Seventy-Five