M42 screw mount. Auto or manual preset aperture. NOTE front filter ring threads are slightly dented on one side see photos.
Vintage CARL ZEISS Jena Tessar F/4.5 10.5cm Lens With Compur Shutter Zeiss-Ikon
CLA'd & Tested Carl Zeiss Jena Biotar 58/2 M42 Praktica Red T 12 Blades Lens
Carl Zeiss Jena Prakticar MC 50mm f/1.4 Lens Praktica Bayonet Mount Radioactive
Exa Type 6 Ihagee Dresden + Carl Zeiss Jena Q1 50mm f/2.8 / Analog SLR 35mm
Carl Zeiss Jena 50mm f1.4 Prakticar MC Lens - Praktica Bayonet mount / PB fit
Contarex Carl Zeiss 135mm f4 Sonnar Lens For Contarex SLR Cameras
