Rolleiflex Automat Model 4 75mm F/3.5 Zeiss Tessar Twin Lens Reflex Camera
Early 1950s Rolleiflex Automat 4, with single coated Zeiss Tessar 75mm f/3.5 lens. See the photograph looking down for an example. Screens aren't easily user replacable on these early models so I haven't taken it apart to clean it.