Watch List notes:

Elizabeth II (1952 -), gold 4-coin Britannia proof set, 2011, One Hundred Pounds, Fifty Pounds, Twenty Five Pounds, Ten Pounds, coins weighing One Ounce, Half Ounce, Quarter Ounce, and Tenth Ounce of fine gold respectively, crowned head right, IRB initials below bust for designer Ian Rank-Broadley, Latin legend and toothed border surrounding, rev. Britannia seated facing right, wearing a helmet and carrying a trident, behind the ripples of a Union flag, '2011' in exergue by designer Susie Zamit (S. PBG33-2011) As struck, in original Royal Mint wooden case within outer black cardboard box with certificate of authenticity.

(£2,500-£2,700)