I have a Vivitar Series 1 F/2.5 MF 1:1 Macro lens For sale.
This is one of the sharpest macro lenses ever produced for a pentax camera and that includes modern AF lenses. It is often referred to as legendary. The optics are made by Kiron. The lens is in mint shape, looks and feels like brand new and is built like a tank. This lens is also great for portrait work.
Serial # 22403429
I would like to get $175 for this lens.
I am only selling this to finance the DA* 16-50mm and I really don't shoot Macro.