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By Sharon (Guest Post)10/13/2008
You might try coating them with Armoral or WD-40...wiping either off, after applying the product...
By falldowngobump 10/11/2008
There is lots of information on cleaning collectable glass and porcelain on e-bay, search for the discussion board on glass, pottery and porcelain. I believe its advice from the collecting experts. Good luck!
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