Need help identifying this coin

[Epi-hunter]

Hi Everyone,

I received a message through the American Detectorist main web page asking if anyone can help to identify this coin. He said he and his wife found it in North Carolina in April (not sure if it was in the water or soil). He said it was crusted with salt and he soaked it in vinegar for 15 minutes for this final result (attached).

Anyone have any ideas?

Thanks!