The couple also signed a million poundnote each for the Bank's guest book and the Queen was shown the very first banknote she had signed on 29 November, 1937, aged 11.
The author Mark Twain wrote a short story, The Million Pound Bank Note (later made into a film starring Gregory Peck), in which a penniless sailor is given the note, little knowing he is the subject of a bet between two brothers.