Merry Christmas everyone...
the topic has bcome a 'little heated'
In all fairness to Steve, the following statement might imply that there is only one correct finish and that only one shop accomplishes that... I can understand Steve, becoming a little frustrated.
Most are done now in yellow zinc which is too bright.......and not original. We still rebuild (all in house @CHP) and have the original "gold cad" plating on the boosters that we restore. Only one plating shop in our area tha does the factory cad plating now. I don't think there are any platers in CA that do factory correct original cad anymore thanks to Pelosi, Feinstein and other nitwits in CA that run their government.
As far as the photographs of the inside.... that is indeed a good indicator of what I'd like my booster to look like. Wouldn't matter to me if it was zinc or gold cad... but if the inside looked like that, then heck the outside must have looked like that at one time, no?
And while I trust Jerry's expertise and knowledge, the testing done in 1980's would require some serious analysis. Even today it is common to use things like mass spectrometry to analyze the components and proportions of individual metals in a coating. This is not cheap. So without a new analysis of an original booster's interior, we can agree to disagree. One thing for certain is everyone agrees that there is certainly a lot of 'over-restoration' of many car parts..... the bright blue clips on the brake line's comes to mind.
I certainly agree with Jerry, that if you have a good looking original part, then do not restore it. If you feel the need to have a booster restored I'd be very happy with a booster restored by either of these gentlemen.
When someone tells me it's the wrong plating, I'll just smile and nod my head.