ELIZABETH D G REG F D 100 POUNDS around the effigy of Elizabeth II facing right wearing a crown. Below the neck the initials of the engraver
Description reverse
BRITANNIA 1 oz FINE GOLD 999.9 2015 around the effigy of Britannia facing left, with a trindent shouldered in her right hand and a shield with the union jack in the left. In the right field the initials of the engraver
Reference
United Kingdom. 100 Pounds (Gold) 2015, The Royal Mint. CoCo GB-2015-0016.