Fifty Pence 2021 Decimal Day 50th Anniversary Gold Proof, Struck on the Day, 15th February 2021, the reverse a clever assemblage combining parts of the designs of the pre-decimal coinage Florin, Shilling, Sixpence, Brass Threepence, Penny, Halfpenny and Farthing, with a 7-sided panel in the centre with 1971 Decimal Day. S.H92, The reverse of the 'Struck on the Day' coin not frosted so quite different in appearance to the standard Gold Proof and Gold Proof Piedfort issues. nFDC/FDC the obverse with some toning, in the Royal Mint box of issue with certificate signed by Gavin Elliott, Head of Production of Commemorative coin at the Royal Mint