VERO CAMERA SHUTTER, KAMERA VERSCHLUSS WORKS

Shutter works perfect. All speeds accurate. Also the longer speed, 1/25th, is accurate.
Shows some signs of prior use. On the shutter are no numbers. All functions smoothly and as it should. For which camera it is is unclear.Shutter comes in original makers box. Diameter of the shutter is 48mm. Thread at the front is 22mm, at the rear 22mm. Screw thread diameter retaining ring is 25mm. Comes without retaining ring. Aperture works smooth and blades show no wear and are clean. Speed and aperture ring operate smoothly.