Watch List notes:

Elizabeth II, proof sovereign, 2017, The Sapphire Jubilee of the Queen, head r., wearing tiara, rev. St. George and the dragon (S.SC9E), with case of issue and certificate, brilliant uncirculated
Struck on the Queen's Sapphire Jubilee, one of 750 struck on the day (6 February 2017), certificate number 593.
(350-450 GBP)