Weird This device is still hard to find Old circa 1920/1930 (marketed from 1923) Stereoscopic Camera Type Binocular brand gallus Adjusting the instantaneous speed / placement Several openings 6.8 / 11/22 Armed Wheel It is delivered inside case buff green. with instructions on the back cover Metal plates (5) and a metal frame and glass translucent The body of the device is black metal with leather in the central part. Dimensions approx. 15.5 x 7.5 x 9 cm Good overall presence of small scuffs cf Photo