PRONTOR, PRONTORMAT-S A.G.C. CAMERA SHUTTER, KAMERA VERSCHLUSS WORKS

Shutter works perfect. All speeds accurate.
Shows some signs of prior use. All functions smoothly and as it should. For which camera it is is unclear.Diameter of the shutter is 56mm. Thread at the front is 22mm, at the rear 18mm. Screw thread diameter retaining ring is 24.5mm. Comes without retaining ring. Aperture works smooth and blades show no wear and are clean. Speed and aperture ring operate smoothly.