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Old 01-19-2019, 03:25 PM   #6
Erich B.
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Erich B. is offline
Join Date: Mar 2001
Location: Southern California
Posts: 7,643

I agree-- with a mint piece showing no signs of deterioration, I would not do anything to it except to watch the temperature and humidity of the storage place and monitor its condition.
Festina lente!
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