Duplex Super 120 Analogue camera

The Duplex Super 120 is a 120 format film camera produced in Italy from the 1950s, intended for amateur audiences. It is a medium format twin lens reflex (TLR) camera, or in some versions, a camera with a twin viewfinder featuring simple, fully mechanical operation.

Main features

Film format: 120 (negatives 6×6 cm).
Optics: dual lens — one for viewing and one for recording.
Ottuator: mechanical, with times generally from 1/25 s to 1/100 s, plus B exposure.
Focus: fixed or zone (in some variants), with a minimum distance of around 2-3 meters.
Viewfinder: an upper compartment with a magnifying lens for focusing; the image in the viewfinder appears reversed laterally.
Body: made of bakelite or lightweight metal, with a squared design typical of the era.
Film advancement: manual via knob, with a red window on the back to check the frame number.
The single doesn't seem to work, everything functions normally in stereo, dust particles on the lenses.