Reference:
Pick: #380d-e , The Banknote Book: B188
Reference list
Description
England. Bank of England. 1971-1991 "Queen Elizabeth II" Issues. 20 pounds type 1984. Designed by Henry Eccleston. Date: No date (1984-1988). Dimensions: 160 x 90 mm. Watermark: William Shakespeare. Material: Paper. Windowed security thread. Printer: Bank of England Works. Front and back: polychrome printing predominantly purple, blue and yellow. Description of the front: Seated Britannia at left. Saint George on horseback slaying dragon. Portrait of Queen Elizabeth II at right. Guilloche patterns. Series and numbering printed in black. Texts in English: "I promise to pay the Bearer on Demand the sum of Twenty Pounds" in text at centre. Signature: D. H. F. Somerset or G. M. Gill (Chief Cashier). Description of the back: Texts in English. Guilloche patterns and rosettes. Statue of William Shakespeare at Westminster Abbey in London and scene from Romeo and Juliet in background. This is the first banknote in the world with a windowed security thread! Like Pick: # 380a-c but different colors, different watermark, different prefix format and windowed security thread.