Cosina 3.8/20mm MC wide angle lens
This Cosina 3.8/20mm MC is a fish-eye lens for Pentax (PK mount). It looks like it has never been used. See pictures. Glass is clear and scratch free. No fungus.
Unfortunately, the diaphragm blades do not response well to the turning of the ring. This lens thus needs to get serviced before it can be used. This explains the low pricing on this item.
Including both lens caps.