Seems to be an earliest prototype version of the LOMO Etude camera. Under technical name "A1", engraved on the frontplate (no more markings on body nor lens). Original body design with an accessory shoe on the top plate. Still fitted with Sokol Automat lens, though the faceplate of the lens is already surrounded in a light meter element with ASA settings. Originally designed shutter advance knob (see 7th picture below). Frame counter on the bottom plate.