Mali, A stunning pair of original hand drawn design essays for a 1000 Franc note, dated 1967, produced by Bradbury Wilkinson, most likely by Derek Friday, the designs consist hand drawn and printed elements layered on card, measuring 10.5cms x 16.0cms, both are mounted on a blue backing card bearing a Bradbury Wilkinson & Co Ltd label, all in good condition with a small number of minor spots and stains