Watch List notes:

Ten Pounds 2015 Queen Elizabeth II - The Longest Reigning Monarch 5 oz. Gold Proof, Obverse with James Butler Portrait, S.M6 FDC in the box of issue with booklet and certificate No.93 of just 180 minted, with just 170 in this presentation format, the only date with the James Butler portrait

Estimate: 9500-11000 GBP