I haven't seen this before. Reused ICG Label.

Someone cracked out an ICG MS-63 1930 Buffalo Nickel, removed the label and inserted it into a self-slab with a lower grade coin.

https://www.ebay.com/itm/146903862705

 

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Looks like the guy taped the slab together also.
Boneheaded.

 

It should not be that hard to have labels that change color or void in some way when they are removed or tampered with. They had auto inspection stickers fifty years ago that did it.

 

This seller knows absolutely nothing about coins.

Here is their description of the item. They stated the coin is made of copper

The product is a 1930 Buffalo Nickel 5c coin graded as ICG MS63. This coin is made of copper and was minted in Philadelphia. It is a business strike type and belongs to the Buffalo variety. Being circulated and originating from the United States, this antique coin holds historical significance and collector value for those interested in numismatics.

 

The bum!