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Old 05-28-2017, 10:42 PM
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Mikey48 Mikey48 is offline
Join Date: Aug 2016
Location: Michigan
Posts: 674

Ditto +2 Warm water and dish soap. Don't be in a hurry. Some of that crud will soften up over a few days.
Use the wooden toothpick as described after that to see if it is releasable.

Note: If it's a zinc cent, it most likely will be internal corrosion and that is a dead end for the zincoln.
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