The Zeiss Ikon Nettar 515/16 was introduced in 1938 and produced through the World War II years plus 6 years after till 1951. It is a Folding billow type roll film camera that used 120 roll film (6×6cm exposures) format. The Lens/shutter combinations go as follows: Prewar and during the war from 1938-1945 it had a Nettar 1:6.3/7.5cm in a Telma leaf shutter or a Nettar 1:4.5/7.5cm in a Klio leaf shutter. Postwar from the years 1946-1951 it had a Novar Anastigmat 1:6.3/75mm (coated) in a Vario leaf shutter or a Novar Anastigmat 1:4.5/75mm (coated) in a Pronto or Prontor-S leaf shutter. All the variations have a viewfinder with two fold-up optical frames. The manual load shutter speeds are 1 second up to 1/175 of a second with bulb and timed. The cameras have a screw-in cable shutter release socket, focus from 1.2m to infinity, have a fold-down film advance winder, 3/8 inch 16 thread tripod socket (quite common before WWII), red (film backing) frame counter window in the back cover with a slid cover, and have a Zeiss Ikon “Panchrom” film sticker inside the film compartment on the back cover. The Dimensions (folded) are 135 x 78 x 45 mm and the weight is 510 Grams.