IBNS Journal 61-3

includes articles on Three Women for Nicaragua, Einstein and Bohr, Anomalies and Errors in the Numbering of French African Banknotes, Alexander The Great and Cyrus The Great, Keys, Locks, Arabic Rotators and Other Ways to Collect Banknotes. Login to read your copy.


Bank of England's 50 Pound Note

Nominated by Christopher Nield, IBNS Member 9638

NoteB206 (PNL): 50 pounds (US$63)
Predominant Colour(s)Red
FrontEnglish text; Bank of England seal; Queen Elizabeth II; coronation crown; computer chip circuitry; Bank of England headquarters, London; coats of arms; Queen Elizabeth II
BackEnglish text; mathematical table and formulae from Turing’s seminal 1936 paper, “On Computable Numbers, with an application to the Entscheidungsproblem;” ticker tape depicting Alan Turing’s birth date (23 June 1912) in binary code; technical drawings for the British Bombe; Automatic Computing Engine (ACE) Pilot Machine; Alan Turing; sunflower head as red foil patch
Watermark (shadow image)None
Additional SecurityKurz’s Kinegram Colors holographic stripe
PrinterDe La Rue
Size146 x 77 mm Polymer (Guardian and Safeguard)
Information provided courtesy of The Banknote Book