Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Polishing Porcelain

I have had good luck with a product called "Bar Keepers Friend"...This is a powder made to clean porcelain stove tops and is available at most large supermarkets and at Lowes. TRY IT ON A SMALL AREA FIRST. Some signs may have a slight dullness after you rub out the stain. A coat of car wax usually brings back a shine. Good luck.

Clayton