OK, found it....

by Hoot , Diversityville, Liberal-sota, Monday, April 17, 2023, 20:21 (521 days ago) @ Hoot

"Telesar Automatic Telephoto 135mmf2.8 Lens 18*" for an Olympus OM-1

Any use to you? I don't think I ever had it out of the box and certainly never mounted to my camera. I only vaguely recall where it came from...

I could do a few pics (after CSA) if it would help.