Roosevelt dime very unusual and giant cud error

As the coin is heated, a bubble of gas trapped between the copper and clad layer tries to expand but can't because the clad layer is still too rigid. As the heat continues to increase the metal reaches a "plastic" stage. It isn't molten or liquid yet but the increasing pressure from the trapped bubble finally allows it to blow up a raised bubble on the surface of the coin. The coin image details remain on the surface of the bubble. As the coin cools one of two things can happen. If the coin cools rapidly the metal solidifies and holds it's domed shape. If it cools slowly the gas bubble contracts and creates a partial vacuum causing the bubble to collapse. In the case of this coin I suspect it was still domed and something pressed down flattening the surface of the bubble and causing the light damage on the reverse of the coin. The reason there was no real damage to the reverse of the coin was because there was no trapped gas bubble between the copper core and the reverse clad layer. But I have seen clad coins with similar bubbles on both sides of the coin.

 

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Sounds like you may have tried this in the past, or know of someone who has. Have you ever seen a dime heated to produce something like this?