I think it is that die. Just that the devices are flattened a bit from circulation. Note the lower center of the 'M'? It looks the same as your coin. But check for die scratches on those areas to see if they match like fingerprints? Keep in mind also that die scratches flatten more in the open fields first. Last near outside edges of devices. mostly remaining on insides of devices. (In the centers of devices)
Yes I can see how yours could be a DDR, but those photos from Wexler's, look normal.
The JFM is very normal, no stretching or "inflated tire" effect that I can see. And for LB, there seems to be a shadow so I can't see it very well, but it looks like a normal cent to me. Again I'm talking about Wexler's photos, not yours, as your coin looks like a DDR and has the inflated effect.
"Life is like a box of chocolates, you never know what you're gonna get." - Forrest Gump