Watch List notes:

British Coins, George VI, proof sovereign, 1937, bare head l., rev. St. George and the dragon (S.4076), certified and graded by PCGS as Proof 64 Deep Cameo
*ex St. James's Auction 41, 30 November 2016, lot 275.
One of only 6 certified by PCGS in this grade, only 7 graded higher.
(2750-3250 GBP)