Cleaning and Stain Removal - Copper - cleaning spots

I think I splashed tomato sauce on some decorative copper plates, anyway--they have spots on them. Even after cleaning with a copper cleaner or with vingar & salt, the spots remain (very faint), then they turn darker as time goes on. Anyone know how to clean the spots off? :o

If the plates were decorative and never meant to be used for eating. They most likely have a protective laquer of them to keep them looking good and from tarnishing. Which, if you remove the protective layer and reapply it may do the trick. Check out this website from DIY for more tips on copper cleaning.

http://www.doityourself.com/clean/copper.htm

The copper items with "spots" are not lacquered. The spots darken much quicker as the copper tarnishes (ugly spots). When I polish, I have to rub a long time to try to get the spots off -- they are still barely visable after polishing (then darken to ugly spots, again). I've tried all kinds of polish.

Have you tried a cleaning and sealing process on them in the past..with a laquer?

The acidity of the tomatoes has damaged the polished finish. As a result, the affected areas are oxidizing more quickly than the rest of the plates. This will require more frequent polishing. As indicated, because plates are decorative, they can be polished, wiped with lacquer thinner to remove any residues taking care not to touch plates with bare hands, and sprayed with a couple coats of lacquer to seal. Eventually, the lacquer seal will degrade and will have to be removed and the polishing and sealing repeated.

Joneq says try this (http://www.superiorcarcare.net/eo104.html).