Brilliantly toned American Silver Eagles in old PCI holders are among the most beautiful–stunning–toned coins. But when crossed over to PCGS, keep an eye on that toning. It may go terminal.
When you cross over, the coin interacts with the Gold Shield emblem. An olive green starts to dominate, usually from the corners.
At one time I had almost 100 of marvelously toned Silver Eagles crossed over to PCGS from old green PCI holders known for their rainbow hues, interacting with the chemicals in the label. Coin World featured my collection. Some had the Gold Shield; others, not. Ones without the Gold Shield kept their color. Not so with the others.
You can see the deterioration already in this coin, posted on Facebook.
Here’s another example:
Here’s what the old green PCI holder looks like:
Some of my PCI-crossed over Silver Eagles even took the pattern seemingly of the American flag:
Many slowly started to develop an olive green unsightly tone.
Here’s an example of that color:
Here’s a current offering from eBay that is beginning to go terminal. How can we tell? This has PCGS TrueView so we can see the toning of the coin as originally submitted.
Now let’s go to the PCGS cert and see the TrueView:
My advice is to keep an eye on your crossed over Eagles, checking them every month for that olive green creep. Of the 100 I previously owned, only 9 are close to their original color, and most of these in holders without the PCGS Gold Shield.
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