Minolta Auto W.Rokkor-SG 28mm f/3.5 Lens Correctly, it's an mc/md mount. 6 aperture blades. It's an early model, a thick and cool model with a 67mm filter diameter. Please check the sample photos attached! Note that the 9th and 10th photos were taken with a helicoid adapter attached. - Brand: Minolta - Model Name: Auto W.Rokkor-SG - Focal Length: 28mm - Maximum Aperture: f/3.5 - Aperture Blade Count: 6 blades - Mount Type: mc/md mount Thank you for viewing. [Appearance] ・The exterior has few scratches and is in a clean condition. [Optics] ・The lens appears clear with no visible mold or fogging. However, there is some fine dust. ・When held up to strong light, there are slight, faint cleaning marks on the rear element. [Operation] ・Each function works without any problems, but the infinity focus is slightly over-inf, and focus is achieved by slightly adjusting back from infinity. Other than the above, there are no defects. The lens caps are aftermarket, but both front and rear are included. Please note that the above condition is based on a layman's assessment and is not guaranteed. ※Please refrain from purchasing if you are a perfectionist and expect a product to be perfect, as this is an old product.