Watch List notes:

Elizabeth II, Gold Proof Sovereign Three-Coin Set 2009, comprising double sovereign, sovereign and half sovereign, obv. Rank-Broadley portrait of the Queen, rev. Pistrucci, limited edition no. 543 of 750, encapsulated in Royal Mint case of issue with certificate of authenticity, FDC.
(Estimate: 1100 - 1300 GBP)