Watch List notes:

Elizabeth II, silver proof ten pounds, 2021, milled edge variety, from The Great Engravers Series, commemorating the Gothic crown obverse by William Wyon, ELIZABETH II D. G. REG. F. F. 10 POUNDS 2021, head r., wearing tiara, rev. the obverse of the Gothic crown, young, crowned bust of Victoria l., wt. 5oz. (S.GE20), with case of issue, with certificate, FDC

Estimate: 400 - 600 GBP