Watch List notes:

Elizabeth II, proof piedfort sovereign, 2019, Trial of the Pyx Issue, head r., wearing tiara, rev. St. George and the dragon (S.SC9), with Trial of the Pyx folder and case of issue, with typical contact marks to fields seen on Trial of the Pyx coins, otherwise about as struck
One of 6 from the Trial of the Pyx.
(700-900 GBP)