Watch List notes:

(g) Elizabeth II (1952-2022), Proof Britannia Two Coin Set, 1987, struck in fine gold, 25 Pounds to 10 Pounds, crowned head right, rev. Britannia standing facing left, milled edge, 8.50g; 3.42g (Spink PBG02), a handful of small friction marks, otherwise brilliant and as struck, in original Royal Mint case of issue, No. 04053 (2).

Estimate: £550 - £600