This is the well-regarded Pentax screw mount 135mm portrait prime. It would be perfect for a classic m42 kit or adapted to mirrorless. It comes with the lens hood to prevent unwanted flares in your shots.
This lens is in excellent conditon with moderate cosmetic wear and works perfectly. There is a very slight amount of dust between the elements that will not affect image quality. The glass is clean and scratch-free and the mechanical action is very smooth.
This is a beautiful lens.