Radionar lens F.2.9 75mm f.l. made to cover negatives 2 1/4 x 2 1/4. Could be used for long focus in 35 mm SLR cameras. Built into a helical focusing mount. scneider. Schneider-Kreuznach Radionar Lens
Radionar 105mm lens, made by Schneider. Radionar lens: F:105mm, f/4.5, number 491292. Lens in 18mm tube with Leica thread. Four aperture discs f/5.6/8/11/16 fitted by unscrewing rear element. No focusing movement, but scale infinity to 6 feet, engraved on front lens rim. Radionar 105mm lens 1925-1935
Schneider Kreuznach lens Retina Xenon f/2.0 50mm, Serial No 4899061. Interchangeable front element of lens on Retina IIC and IIIC and reflex cameras. Interchangeable Front Element, Retina Xenon 50mm lens