Possibly an early stage spoon job. If you check the diameter you'll most likely find it to be noticeably smaller than specification.
Specifications are: Diameter: 19 millimeters = .748 thousandths of a inch. Nearly 3/4 of a inch Weight: 3.11 grams Composition: .950 copper, .050 tin and zinc* Edge: Plain Rhubarb
First, Sorry for not replying sooner. The penny is the same size as my other 1980's, about 3/4 inch. I don't known how to spoon except by heating the spoon really really hot. If you hammer the edge it will cause damage to the rest of the coin. You can see the lettering under the layer. The revese side is normal and no damage to it. Cheryl
Clothes dryer would cause both sides to look that way or damage it. that coin would had to run for days nonstop at very high heat, but one side?
If the coin is stuck, only 1 side is exposed to moving parts which wears the edge of the rim down and over the inner edge.
if the coin is stuck then part of the rim would not be rounded down. posted pictures of the coin with a ruler. same measurement of the normal one.
dryers don't have moving parts, it is a round drum. I have a dryer. the big commercial also has a large round drum (one Part). The penny would roll around and bounce as it goes around. I would smooth both sides of the coin or really damage it. the temperature would still have to be very high cheryl
The big round drum is the moving part. The coin gets stuck between the edge of the drum and the dryer. The drum, as it turns, causes this damage.