One thing you might check into are polishing cloths made for fine watches. You can buy these for polishing & restoring any sort of metal finish you find on watches or jewelry. Watchpolishing.com sells about every kind of specialty polishing item you could wish for.
Polish?
I've noticed some nice restorations - or at least cosmetic improvements of a few Micro Seiki turntables being offered for sale here and on Ebay lately. My question is what polish are they using? I have a DDX-1000 and would like to restore the silver parts to their former glory. Any help appreciated!