Watch List notes:

Third Guinea 1806 as S.3740 with an interesting countermark on the obverse of a running horse with small figure 5 on it's side and a faint S above, the countermark in an irregularly-shaped almost heart-shaped area, previously unseen by us, countermarked gold pieces very rarely encountered in any coinage, an interesting piece, host coin Near Fine, countermark Good Fine. Cataloguers Note: The circulating Crown-sized coins of the earlier period were valued at 4 Shillings and 9 Pence, rising to 5 Shillings in 1804 with the striking of the Bank of England Dollars

Estimate: 125-250 GBP