Picked up some rolls at a flea market today and this was in one. Reverse is normal but the coin is slightly cupped so I figure it has to be a squeeze but can't figure how it was done. They'd been in the tube so long I had to heat it with a torch to get the coins out.
Wow, I've never came across a cent that was cupped before but most likely I'd say it came from the heat being copper is a very soft metal, so much that heat would definitely affect it in some way. You had to heat the tube with a torch? That in itself may have been the culprit for your malformed cent.
We're talking a small amount of heat on the plastic, not enough to deform or discolor the coins. I look for tubes like this because you know they haven't been opened in many years.