Watch List notes:

G Elizabeth II, gold proof set, 2020, comprised of two pounds to quarter sovereign, head r., wearing tiara, rev. St. George and the dragon, with George III Royal Cypher to left of date to reverse (S.PGS93), in case of issue, with certificate, FDC (4)
Certificate number 34 of only 600 sets issued.

Estimate: 1200 - 1400 GBP