With the number 370844. Argus C3 is a 35mm camera rangefinder film made by Argus and produced between 1939-1966. The Argus C series had been called"" the brick"" . C3 is similar to the C2, but with holes for flash sync at the left end. specs Lens: 50mm Argus Coated Cintar f / 3.5 filter three sliding elements Aperture: f / 3.5-f / 16 Focus range: 3-50 feet + inf. Focus: to match the rangefinder images in the eyepiece of the rangefinder, rangefinder coupled to the lens with a gear Shutter shutter blade speeds: 10-300 + B Setting: dial on the left front of the camera; setting B is separated from the dial by a collar below the trigger set to B, for speeds adjusted to I Trigger: top plate, with female connector cable release. Clamping lever: right in front of the camera Frame counter: manual reset does not work w / film in the camera, on the top plate Winding knob: Hold the tongue of the film and turn the knob wound around a quarter turn, then release the tab winding and continue turning the knob winding without forcing until it detenga.asegúrese not hold the winding knob for more than a quarter turn, or the film could move beyond one or more exposures; on the top plate Retaining knob of the film: to the side of the dial counter movies Viewfinder coupled rangefinder, but the reverse ocular separate rangefinder and rangefinder. Rewinding knob: on the bottom plate Rewind release: no special button, simply turn the rewind button; dial counter film on top of the camera will rotate backwards. PC socket flash: no PC, two holes on the left side of the camera for dedicated flash unit. Cold Shoe Timer: none Cover: hinged Embossed into the hole of the spiral of the film: MPC and patent numbers US Tripod socket ¼"" Body: metal; Weight: 749g Translation made with the translator www.DeepL.com/Translator