This stuff may work

[DigItUp]

I have some Jewalry cleaner it's a wal-mart brand and this stuff works i left it in for an hour andthe penny looked new it had some black lines through it but i think it was the dirt that hadn't come off yet i'm soaking another one i'll post the results tmorrow when i take it out

 

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Treasure of Victoria Peak - Grab it through Amazon!

[MUD(S.W.A.T)]

Jewelry cleaner can strip metal off coins, very bad to collectors!

HH!!