Tecnics 1200G platter cleaning

The brass platter is getting dirty and I was wondering what to clean it with. Is it clearcoated?

tzh21y10-11-2018 2:55pm

tzh21y OP Details Discussions Posts This discussion Message User 1,654 posts 10-11-2018 at 03:15pm Copy Comment URL Report Comment Edit Delete I have a boston audio mat on it. maybe its carbon graphite dust, not sure
tzh21y OP Details Discussions Posts This discussion Message User 1,654 posts 10-12-2018 at 12:17pm Copy Comment URL Report Comment Edit Delete i am thinking its carbon graphite from the boston audio mat but that does not explain what looks like tarnishing around the edges of the platter