Pick: #393 , The Banknote Book: B202
England. Bank of England. 2002-2010 Issues. 50 pounds type 2011. Date: © 2011-2015. Dimensions: 156 x 85 mm. Watermark: Queen Elizabeth II and electrotype £50. Material: Paper. Solid and windowed Motion security threads. Printer: Thomas de La Rue (TDLR). Front and back: polychrome printing predominantly pink, orange and red. Description of the front: Bank of England seal. Omron rings. Bank of England Headquarters in London. Portrait of Queen Elizabeth II at right. Guilloche patterns. Series and numbering printed in green, red and blue. Texts in English: "I promise to pay the Bearer on Demand the Sum of Fifty Pounds" in text at centre. Signature: S. Salmon or Victoria Cleland (Chief Cashier). Description of the back: Texts in English. Guilloche patterns and rosettes. Portrait of Matthew Boulton and James Watt. Boulton's Soho factory, Whitbread steam engine. Cogs.