SN 3136153. Very nice lens. I would rate it at 8 for cosmetics and at 10 for performance on a scale of 10. It has Pentax M42 screw mount. It will work on older Pentax film cameras.
Over all good cosmetic condition. The only problems is that it has some number inscribed on the lens barrel. Front and back glass elements are in excellent condition, free of scratches and cleaning marks. No fungus or fogging. it has couple minor dust specs inside glass elements. Aperture works good. Aperture blades are not slow. Focus works good, it is very smooth. Lens has normal rub marks and scratches on the lens barrel. Everything works as it should. It comes with both rear and front caps.
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