Watch List notes:

The 2018 United Kingdom Gold Proof Set an impressive 5-coin set in Gold comprising Five Pound Crown 2018 Prince George 5th Birthday, Two Pounds (3) 2018 200th Anniversary of Mary Shelley's Frankenstein, 2018 100th Anniversary of the RAF, 2018 100th Anniversary of the First World War Armistice, and Fifty Pence 2018 Representation of the People Act all Gold Proofs. S.PGC23, The Prince George Five Pound Crown only available in this set. FDC in the Royal Mint box of issue with certificate number 122 of just 175 sets issued

Estimate: 4500-5500 GBP