This high quality 2x yellow filter is essential for b/w photography. It fits a wide variety of common Russian lenses and their German predecessors:
Jupiter-8 and 8M, Sonnar 50/f:2
Jupiter-3, Sonnar 50/f:1.5
Jupiter-11, Sonnar 135/f:4
Jupiter-12, Biogon 35/f:2.8
Please ask me if you are not sure about the thread of your lens. Glass made in Japan.