Acquired this coin, on its way, but asking if anyone thinks a 291 year old coin, in ok shape (Reverse not too bad), carries a premium for the overdate? 1728 with an obvious '7' under/over it. Can't find another like it. Low mintage. About 90,000+ I think. Not a very high value on these, especially worn as it is. Hand hammered I think, and why these seem to have many variations. Anyway, not an expert at all on these, but looking for an education. Thx.

