<Tr> <Th> Design date </Th> <Td> 2 November 2011 </Td> </Tr> <P> The Bank of England £ 50 note is a banknote of the pound sterling . It is the highest denomination of banknote issued by the Bank of England . The current cotton note, first issued in 2011, bears the image of Queen Elizabeth II on the obverse and the images of engineer and scientist James Watt and industrialist and entrepreneur Matthew Boulton on the reverse . </P> <P> Fifty pound notes were introduced by the Bank of England for the first time in 1725 . The earliest notes were handwritten and were issued as needed to individuals . These notes were written on one side only and bore the name of the payee, the date, and the signature of the issuing cashier . With the exception of the Restriction Period between 1797 and 1821, when the French Revolutionary Wars and the Napoleonic Wars caused a bullion shortage, these notes could be exchanged in full, or in part, for an equivalent amount of gold when presented at the bank . If redeemed in part, the banknote would be signed to indicate the amount that had been redeemed . From 1853 printed notes replaced handwritten notes, with the declaration "I promise to pay the bearer on demand the sum of fifty pounds" replacing the name of the payee . This declaration remains on Bank of England banknotes to this day . A printed signature of one of three cashiers appeared on the printed notes, although this was replaced by the signature of the Chief Cashier from 1870 onward . </P> <P> The ability to redeem banknotes for gold ceased in 1931 when Britain stopped using the gold standard . The £ 50 note ceased to be produced by the Bank of England in 1943 and did not reappear until it was reintroduced in 1981 . These D series notes were predominantly olive green on both sides, with an image of Queen Elizabeth II on the front (as with all subsequent £ 50 notes) and an image of architect Christopher Wren on the back . As a security feature, this note had a metallic thread running through it, which was upgraded to a "windowed" thread from July 1988 onward . The thread is woven into the paper such that it forms a dashed line, yet appears as a single line when held up to the light . The series D note was gradually replaced by the series E, beginning in 1994 . This reddish note replaced Christopher Wren with John Houblon, the first governor of the Bank of England, on the reverse . As an additional security feature, these notes had a foil patch on the front . </P>

When was the first £50 note issued