WTB/Looking For Zenith Contrast Knob for Model 28T962R and Others

[hfrazier]

Hi Everyone,
I'm glad to finally be a member of this forum!

I'm looking for a contrast knob for my Zenith 28T962R, which is listed as cabinet Part No 46-762 - "Contrast Control Knob." I have located a clear knob that fits very closely, but not quite. I also assume the original knob for this set was a brownish purple color, just like the volume knob pictured.

If anyone out there has one of these in their stockpile of knobs, I'd love to buy one! The outer diameter of the knob should be almost exactly 2". The shaft inner diameter at the front would be about 5/8", with shaft diameter towards the chassis being 1/4". It looks like it would have two plastic 'prongs' to mate with the shaft for the potentiometer and the pulley.

Also, I am looking for two (or four) of the small 5/8" knobs that fit on a 1/4" shaft for fine tuning, brightness, V Hold, etc. But, since they are ususally hidden, they are not as important to find. (Second picture attached is of the two I have.)