Yashica Contax Tessar 45mm MMJ. I bought it used this year. No functional problems. The exterior is also in good condition. There is some dust and debris inside the lens. There appears to be slight haze when viewed under fluorescent light, but it's likely not at a level that affects photos. The aperture blades are clean. Includes a Sony filter and front/rear caps. Please consider. Sample Photos: Sigma fp f4 JPEG unedited gfx 50s ii f4 JPEG unedited Both are sample photos taken at the unremarkable f4. Vignetting disappears and sharpness increases at f5.6. planar 45mm 50mm old lens Carl Zeiss Tessar sonnar mount adapter