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Could NCS do anything about Ag2S like those 2 Yunnan Coin?

Started by Maocheng-migration,

2 posts in this topic

  • Member
CHRISS

CHRISS

Posted
  • Member
Posted

It is difficult to determine what is causing the dark appearance on these coins. We would need to evaluated these coins in person to determine what exactly might or might not be able to be done.

 

Chris, NCS

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