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 2018 1/40 oz FINE GOLD 999.9 around Britannia´s head facing left, wearing an ornated roman helmet, below Britannia the initials of the engraver
Reference
United Kingdom. 100 Pounds (Gold) 2018, The Royal Mint. CoCo GB-2018-0002.