Hey Steck, I thought the same thing when I bought my 72.
Ended up finding a Peterbilt trailer brake handle on Ebay.
Its chrome. about 3 inches long with a red jewel set in the end
which matches the Caddy interior and looks cool custom.
The bad news is the original knob is not screwed but pressed on
and I had a hell of a time getting it off. Worth it though.