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Glow in the Dark Walking Liberty Half NEWP


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Impressive. Any idea of the source of that shade of toning or is it a typical stage in the progression to black?

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Impressive. Any idea of the source of that shade of toning or is it a typical stage in the progression to black?

 

I don't have a clue and no not typical toning but anything is possible. I have a Proof Quarter and a proof dime with similar toning so my guess would be stored in some type of tissue paper or coin envelope like folks keep keys in but this is purley speculation :ninja:

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I had an AU '17 mercury dime that was almost as bright purple a few years back. Must be from some sort of paper contact, since paper does sometimes have sulphur , among other trace elements in its makeup.

 

I'm a toned coin fan too.

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