Can you share the serial # of the machine ?
Generally speaking, Orthophonic Sound Box (OSB) finishes matched the finish on the tapering tone-arm and interior hardware.
Choices were: gold ( usually a bright satin / frosty gold, not a mirror-finish, mirror-nickel, or antique bronze
This one seems to have bright gold.
I have a two 8-12's ( both labelled VE 8-12 X ), one with bright-gold arm, the other with antique bronze arm (nearly black now) and a bright nickeL OSB. ( This second machine was bought new by my great-grandmother, and retains the OSB that came with it from the dealer.)
As for the cracking, the one with the split and travelling-crack around the rim, there's not much hope for that... if it still plays well, enjoy it as-is, but I would consider this a parts-donor if anyone ever tried to disassemble it...
As for what to keep: anything this is not cracked / broken beyond use. Things like: screws, bearing covers, needle-bar and thumb screw, back-plate and retaining ring, diaphragm, bearing balls...
The darker one, if the pot-metal parts are intact, would probably be the candidate for rebuild.
I don't think any OSBs left Victor as raw-pot-metal: they were either plated ( Nickel or Gold ), or painted ( portable Orthos such as the 2-55 ). The back-plate and retaining ring were painted black with some sort of "Japan" black. The all-brass OSBs had a chemically-darkened back.
I don't know that I would want to take a chance subjecting a 90 year-old OSB cover to the plating process... I think I would probably either leave it alone, or perhaps paint it to approximate the original painted finish.
If you are uncomfortable working on the OSB, Walt Sommers has replacement body parts, and a great track-record.
The 8-12 is a very nice machine, second only to the Credenza ( in my opinion ), and you should enjoy yours !
Good luck !
