Walz Automat twin-lens reflex camera with mechanical shutter. - Model: Walz Automat - Type: Twin-lens reflex camera - Shutter: Mechanical shutter - Body Material: Metal - Lens: Double lens Purchased from a camera shop in Nagoya two years ago. I am selling it because I no longer use the 120 film format. Thank you for looking. The shutter dial is stiff between 1/2 and 1 second, but the shutter itself works at all speeds. The aperture and film advance are also normal. However, it is an old item, so please understand that it is being sold as-is.