genuine early petri petriflex brass 1960's SLR to m42 mount adapter
later original pentax PK m42 mount adapter to fit m42 lenses to pk cameras
asahi PENTAX PK m42 mount Adapter K m42 lenses to k mount 30120
Tamron Adaptall to Pentax S/m42 Mount Adapter - M1239
Tamron Adaptall -2 for M42 Mount Adapter - M1228
Pentax Screw Mount to K-mount Adapter - Made in Japan
