[Aristotle]

Those that have silver effect speaker grilles are particularly vulnerable to damage - I think of Ocean, Yacht, Melody boy's etc.

Once they've got dents getting them back to original is not impossible but very difficult.

My question though is about those that whilst as flat as boards have surface marks created by stains from grease to various household cleaners etc.

Cleaning them (if it hasn't already happened) creates darker surface patches - still silver of the exposed metal underneath creating a blotchy appearance.

My uneducated interpretation of this is that a surface protection has been removed and if only I could remove the remainder - clean it thoroughly then say spray lacquer the surface it would come back to an approximation of it's original appearance.

I'm going to attempt this with a scrap set but it would be interesting to know if anyone has already done it and what techniques/products were employed.