Arab Republic of Yemen, an original hand drawn design essay for the reverse of a 50 Rials note, produced by Bradbury Wilkinson, possibly by Derek Friday, the design in pencil, ink and watercolour measures 8.5cms x 16.5cms, on paper applied to card, the design is almost entirely hand drawn directly on to the paper with some border elements applied as layers, mounted to a blue backing card showing evidence of previously bearing a Bradbury Wilkinson & Co Ltd Label to the bottom right corner, and bearing a Letter 'B' just above the top right of the design, very clean with great colour, overall in very good condition