m42 pentax screw RARE FAST WIDE 28MM F2.5 PRIME LENS

ULTRA RARE VIVITAR 28MM F2.5 FAST PRIME WIDE ANGLE M42 PENTAX SCREW FIT LEGENDARY LENS.this is a display item lens and hs not been used.so is in perfect condition.would go well on any camera and digital DSLR also.superb optical performance at all apertures.hexagonal bladed iris