Old Copper Coins

Discussion in 'Magic Forum' started by Dmezhkov, Dec 14, 2016.

  1. My old copper coins, which some are almost black, will discolor from the sweat of my hand, ruining that beautiful age. Is there any ideas on how to prevent this, or to artificially create the dark color in old copper?
  2. Copper coins can be sprayed with clear varnish to prevent them from discoloring within time. Firstly clean with metal polish.

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