I think that’s it. Looks like a vintage Blaupunkt (possibly others) knob.Radio, look at the center hole, see the flat side? that corresponds to the shafts on a radio, Blaupunkt, I would guess.
Thanks, Rick
Odo reset knob is very small and looks like the early slim Blaupunkt knobs with a small silver center.I think it's for the odo reset if it has a screw in the side. Radio knobs just push on with no grub screw?