Watch List notes:

Britannia Gold Proof Set 2017 the 5-coin set 30th Anniversary of the first Gold Britannias, comprising £50 Half Ounce, £25 Quarter Ounce, £10 One Tenth Ounce, One Pound 1/20th Ounce and Fifty Pence 1/40th Ounce, each coin with 30th Anniversary Privy mark (30 within Trident) to the right of the reverse. All coins struck in .999 gold, FDC in the Royal Mint box of issue with certificate, only 300 sets produced in this format, strangely unlisted by Spink, who list the 3-coin and 6-coin sets for 2017

Estimate: 1000-1400 GBP