Watch List notes:

BRITISH COINS, William & Mary, Gold Guinea, 1690, conjoined busts right, rev crowned quartered shield of arms, date either side of crown, later harp in Irish arms, 8.30g (MCE 150; S 3426). Good very fine, toned, some flecking on the obverse and patch of dark tone on reverse crown, a scarce date.
ex Baldwin's Auction 38, 4 October 2004, lot 606

Estimate: £3000-3500