I usually use Vinegar for my old coins. Also brought in one of my old "wheat pennies" (from like 1910's) to my tech teacher when i had tech and he polished it and it looked REALLY nice
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Brushless RC18T, Brushless Micro DT, Midwest AeroStar .20, SCX10 Honcho, Duratrax 1/5 Firehammer MT, Traxxas Nitro 4Tec 3.3
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