You might want to try 0000 steel wool soaked with WD-40. I have removed corrosion from other metal this way, but not sure about this tonearm. If you do it lightly it might not remove the original oxidation. If it does, you could re-oxidize the brass with gun bluing or a similar chemical to re-touch the color...
I wanted to ask a question regarding a Columbia coin-op AS. Are the cabinet keys that lock the end of the glass cover universal or were they individually made? I have locks and keys for the front panel and the coin box, but only have the lock and no key for the single lock on the right side of the cover. Is it possible to find a key for these?
Curt
"The phonograph is not of any commercial value." Thomas Alva Edison - Comment to his assistant, Samuel Insull.
"No one needs a Victrola XX, a Perfected Graphophone Type G, or whatever you call those noisy things." My Wife
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