Watch List notes:

Elizabeth II, Proof Sovereign 2017, 'Bicentenary of the Sovereign', obv. Clark portrait of the Queen, rev. Pistrucci's original 1817 'Garter' design, with motto HONI QUI MAL Y PENSE in outer ring, limited edition no. 3399 of 10,500, encapsulated in Royal Mint case of issue with certificate of authenticity, FDC.
(Estimate: 450 - 550 GBP)