This is a fairly rare prime lens for M42 cameras. It would be an excellent addition to a classic M42 kit or adapted to mirrorless for video. A lot of my first lenses for my mirrorless camera were adapted from M42.
This one is in excellent condition with light wear. The glass is clean and scratch-free with no haze, fungus or other problems. The focus has that Pentax smoothness.
The front cap is included.