Circulation flattening can alter/not alter the devices the same. Just like tires on a car, they are not wearing all the same if the front end is not adjusted correctly. Coin wear can have it bumps and grinds out in the wild. But when you look at the first images Of Liberty, note this: The tops of the devices can be altered, but the lower part of the devices are all the same size. That tells me that the die/dies that struck these coins were normal or could even be the same die? But the tops of the devices are what is affected. On the example earlier on a 1964
DDR, even though the circulation was sever, the doubled die was still seen. Why? Because the bases of the devices were not affected, just the upper parts. So when comparing a doubled die with a normal coin, the bases will be different. Wider, just like original devices are/were depending on how much circulation the coin has been through.
Note the closed devices on the next two images. Note the distortion of that area of the devices?

Note the lower part of the
DDO devices were wider/taller when the coin was fresh, but the bases are still wider still, because the die was doubled.
Edited by coop
05/03/2021 8:04 pm