I've got an old MV1 with several lenses:
Takumar (Bayonet) 1:2.8 , 28 mm
Pentax 1:2 , 50 mm
Takumar (Bayonet) 1:2.5 , 135 mm
Rokinon Auto Zoom Multi Coated Macro 1:4,5 f=80-200 mm
Only problem is that the little "signal light" in the viewer is not working anymore.
I've inserted new batteries, and tested the connectors, but no go - so I guess it could be the LED's themselves.
Wondering if I could use these lenses with a new Digital Pentax SLR, but I don't really know a lot about cameras these days.
Comments are welcome...