Polishing a Micro Seiki RT 3000G Gunmetal platter

As a car guy, I was gonna mention Simichrome too, but I thought perhaps it was not quite appropriate since the platter is gunmetal, not aluminum. Simichrome is great for aluminum parts. However, I suspect all of these specialized polishes are similar to one another in composition.

@horsestuff  

The orbital polisher will fling polish all over the place unless you are very experienced with it. The Menzerna Polishing Cream works on all metals and you will need very little elbow grease with it. The tarnish will rub right off. I tried it on gunmetal parts of a hand plane. Worked great. 

No Lacquer applied will keep the metal exposed to oxidation and dulling will occur.

Usually non ferrous metal will be welcome to oxidise and gain a patina, it is attractive on furniture.

I have a Tenuto Platter Mat, and I know these are with a Lacquer finish.

@pindac 

All true, except clear metal lacquer is really toxic and difficult to apply. The stuff you get at Home Depot will leave a bad finish with pits and runs. It is much easier for the OP to polish the platter once in a while.

Lacquer is an application carried out regularly by Custom Spray Paint Services, hence my earlier suggestion to use such a service once a Professional Polisher  had Bright Polished the Platter.

I am not anti DIY Polishing, I have in the past taken Platter Rims to a Bright Polished Finish.

In this case the Value of the BL 111 TT on the used Market suggests it will be aesthetically attractive if dealt with by a Professional Service.