Watch List notes:

Britannia Gold Set 2013 the 3-coin Premium Proof Set comprising £50 (Half Ounce), £25 (Quarter Ounce) and £10 (One Tenth Ounce) in .999 gold S.PBG40, FDC in the Royal Mint box of issue with certificate, only 125 sets issued in this format

Estimate: 900-1200 GBP