Daves well polished Knob

So the real question of this thread is;
Why is my button (shown in the photo) chrome(ish)?
Is it just an early example? (sept '69 build date)
Is it just a black one with the paint rubbed off?
Is it from another model?
Why is my button (shown in the photo) chrome(ish)?
Is it just an early example? (sept '69 build date)
Is it just a black one with the paint rubbed off?
Is it from another model?