A Tamron 200mm f 3.5 fixed mount, not Adaptall, for Pentax screw mount, aka M42 mount. This is completely different than the Pentax PK mount, which came later. Adaptable to just about anything. Overall excellent condition, no dings or scratches. HOWEVER, there appears to be a small spot of liquid on the edge of one of the internal elements. I'm guessing it is oil, as it appears right next to the diaphragm blades. Not an issue if you’re not shooting wide open, minor issue if you are. NO fungus or other crud. Should be an easy fix for someone with the right tools, which I'm not.Lens comes with a genuine Tamron Sky 1A filter and a nice Tamron hard case. no caps.

Happy to answer any questions.Thanks for looking!Stan