Hello, A 1965 black medium-gloss Yamaha G3 was donated to us with an ugly white patch on the lid caused from a cat. I tried cleaning and rubbing this off with Cory products and tried a little rubbing compound but the whitish blotch appears to be penetrated like part of the finish. (It feels totally smooth after cleaning). Does anyone have a remedy for this? I will be leaving tomorrow for Christmas so thanks in advance. -Mike Jorgensen
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