Watch List notes:

Elizabeth II, gold proof fifty pence, 2021, The 50th Anniversary of Decimal Day, head r., wearing tiara, rev. array of pre-decimal coins, highlighted with selected frosting (S.H92), in case of issue, with certificate, FDC
One of just 700 struck on the anniversary of decimal day (15 February 2021). This coin features selective frosting to the reverse, while lot 185 shows the standard issue, with most of the reverse frosted.
(700-900 GBP)