'70's or early '80's guitars with black bell knobs

[ItsaBass]

Can anyone list some guitars that are 30 to 40 years old that came with black Gibson-style bell knobs? I don't know if any Gibsons had them at that time.

I'd like to convert my '83 LP Custom to bell knobs, but the ones that are on there are nice and yellowed and worn, and I'd like ones that match in age. I think it would look weird to put nice and shiny knobs on this guitar.