You can see on your coin how it is slighlty thicker by the rim area from 4 o'clock- 11 o'clock and thinner on the other half from 11 to 4 o'clock. It wasn't centered perfectly when it was struck, it is slightly mis aligned. It would have to be more severe to be worth anything. It's worth a penny. If you want to keep it, keep it. If you want to spend it, spend it.