Very heavily worn two sided ENGLISH PENNY, circa 1800's.  "HEADS", no matter how the coin is flipped.  Look closely at the last picture; the seam from the two coin halves can be seen.  See how thin this coin is:  I suspect the two halves were machined and attached when the coins were lightly circulated, and the owner / owners carried this pocket piece for generations, and won lots of money in pubs, etc.  AS IS auction, study pictures!