Vivitar 200mm F3.5 Pentax m42 Screw Mount Lens (0227-9)
$29.96 USD$39.95 USD
This is a high quality fast lens in the desirable m42 mount. It has a beautiful all metal construction that you only see in top end lenses these days. The glass is clean and scratch-free and the focus is smooth. There is paint wear on the barrel, but this is just cosmetic.