Did you get any where with it bkay? A resin type car polish with the gritty stuff can lift up dirt and grime like this from the finish. If you go to a place with a good selection of car polishes, there's some stuff called "rubber", "rubbing" or something like that, it's a product they use when they polish up cars thoroughly. It's usually in paste form on a tube, it depends upon brand and product. Some proucts are called lacquer cleaners, and they have the fine gritty polishing component that gentely polishes off stubbern grime and staining. There's lots of this stuff available when you find the right store. I'm mostly thinking of the stuff meant for cars, made to restore dull and discolored finishes.
Last edited by Mickey2; 05-19-2018 at 01:35 AM.