Elizabeth II, 1994 Gold Proof "Bank of England" Two Pounds Mule/Error

Elizabeth II, 1994 Gold Proof "Bank of England" Two Pounds Mule/Error

15.98g of 22ct/.917 gold (Actual Gold Weight: 14.64 of 24ct/pure gold). Celebrating the 300th anniversary of the Bank of England. Obverse: ELIZABETH II DEI GRATIA REGINA F D (Elizabeth the Second by the Grace of God Queen Defender of the Faith). Third portrait of Elizabeth II, crowned with the 'George IV State Diadem', RDM on truncation for designer Raphael Maklouf. Reverse: 1694 - 1994, BANK OF ENGLAND, Original corporate seal of the Bank of England with crowned cyphers of William III and Mary II dividing dates, by designer Leslie Durban. Mint State/Proof FDC. Encapsulated in its original Royal Mint presentation case with certificate of authenticity. 

References: S. K4A, KM #1012. 

A mule is the incorrect pairing of obverse and reverse dies. The obverse of this 1994 Bank of England issue should have included the denomination "TWO POUNDS" as this was not included in the commemorative reverse. An unknown number of coins were struck and issued in gold using the obverse die that was intended for the Double Sovereign. The Royal Mint wrote to its retail customers inviting them to return the error coins for replacement with the correct design. No details are known as to how many were returned, nor how many exist in the market.