Elizabeth II, sovereign, 2017I, Trial of the Pyx Issue, head r., wearing tiara, rev. St. George and the dragon, I on groundline (S.SC9B), with Trial of the Pyx folder, with typical contact marks to fields seen on Trial of the Pyx coins, otherwise about as struck
One of 6 examples from the Trial of the Pyx.
(300-400 GBP)