Watch List notes:

Elizabeth II (1952-), gold 4-coin Britannia proof Set, 2007, struck in 999.9 fine gold, One Hundred Pounds, Fifty Pounds, Twenty Five Pounds, Ten Pounds, coins weighing One Ounce, Half Ounce, Quarter Ounce, Tenth Ounce respectively, crowned head right, IRB initials on base of bust for designer Ian Rank-Broadley, Latin legend and toothed border surrounding, rev. design by Philip Nathan, the figure of Britannia standing upon a rock in the sea holding a trident in her right hand, her left hand resting on a shield and holding an olive branch, inscription surrounding (S. PBG28). All proof as struck with original Royal Mint box and certificate and authenticity.
Estimate: £2,500-3,000