HELIOS 44-2 2/58 Lens (early iterations like this one are considered the highest quality glass) VERY SHARP - BOKEH MONSTER M42 Screw Mount Twin-Wheel Pre-Set Aperture Smooth & Clickstop This lens is a CARL ZEISS BIOTAR (Russian copy) Suitable for SLR and/or DSLR MADE IN USSR Serial No: 7581727 (1975 production) Good condition with clean glass, quick snappy aperture (usual oil on blades no affect to performance) smooth focus. A super sharp legendary lens, renowned for its stunning bokeh effect (please see enlarged sample photos in gallery) Fast Shipping from UK to UK & WORLDWIDE