crash

I've been sorting thru my GM OEM Hurst shifter, and I have a bunch of 1966-72 OEM A-body shifters and linkage, my question is what is the correct finish on the shifter body, mounting plates, rods, adjusters, arms/levers, turn buckles and jam nuts...

I know some is Cad/Zinc plated and later was a gold finish, any idea of the change over from one to the other...

Thanks in advance... Crash

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