What's going on with all these dimes?...LOL..This one in paticular. It has a weird "0" also a die crack and the CA on the rev. appears to be connected. Feedback please.
Someone please tell me about this 1980 d dime. The tree on left side is sticking up from the coin more than normal.
The reverse (at least) has been heated, which causes the raised surfaces on the clad planchet. Not an error, all damage, including enviormental damage to the surfaces.
You posted photos and asked a question. We answered based on what you said and the photos you provided. From the CT members that responded you have over 150 years of combined experience all telling you the same thing. Yes we can tell by photos. If you don't want to believe us them take your coin to your local coin shop.
Definitely damaged by heat, it doesn't matter where the bubble forms, it doesn't raise the whole surface. In the case of your coin, the area under the olive branch bubbled up.