The 1911 King George V Gold Proof Five Pounds Piece £5 was originally issued as part of the 1911 Coronation Long proof set (£5 to Maundy Penny).
King George V's portrait can be seen on the obverse of the coin, and Benedetto Pistrucci's portrayal of St George and the dragon is depicted on the reverse.
HIGH GRADE EXAMPLE - RARE CERTIFIED BY NGC PF 64