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Clad coinage toning - how can you tell if it is AT or NOT

Is there a way to tell if a Clad coin has been AT'd or NOT? I am not talking about light golden tone or a little bit of rainbow ring or in a corner...I am talking about really colorful toning of purples and blues.
Any info? Thanks.
-matt

Comments

  • PlacidPlacid Posts: 11,299 ✭✭✭
    Luster still shows thru the toning is a good indicator but no way to always tell 100% for sure.

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