Where did it come from, and what is the diameter and weight? Coins were often filed down in the 1800s to re-engrave e.g. love tokens. I have a George III penny that was filed down and re-engraved for a transported convict to give to their mother. It no longer has any remnants of the George III penny, but the size, weight, engraved date and use as a convict token make it pretty certain. George III Penny, 1797 Copper. 36mm, 25g (KM 618). "When this you see, remember me, dear mother 1827". "C.P to R.P", crown, rose, thistle and shamrock.
What are the dimensions ? Does it register on a Metal Detector ? Could be a Draped Bust ? Doesn't look like a English 1/2 Cent . Mystery for Ever.
^^^ This ^^^ The edges are too sharp, too precise for a coin that has seen enough circulation to wear it smooth. Z
Looks like a stamping blank to me. They're for making jewelry. You can buy them on amazon, and even with the antique look this one has.