The Koroll cameras were 120 film and 35mm viewfinder cameras made by Bencini in Milan, Italy in the 1950s.
The body was based on a single aluminium alloy casting, which included the lens barrel. Each model seems to have gone through a number of facelifts, with minor cosmetic changes.

Introduced c.1961
Lens: Bencini Acromatico 55mm/f8; alternative stop f.16
Shutter: B, 1/30, 1/60, 1/125
24 3×4.5cm images on 120 film

–
Francesco Pusceddu Old Camera Collection