The Reserve bank of New Zealand, a collection of stunning original design essays for the face and reverse of a £50 note, produced by Bradbury Wilkinson, most likely by Derek Friday, the four designs show a lovely progression from simpler rendering on paper in pencil and watercolour, to more refined presentations with hand drawn elements layered on card, all four designs measure 9.5cms x 19.0cms, the more refined designs are mounted on blue backing card and are in good clean condition, the backing card bears a Bradbury Wilkinson & Co Ltd label to the front lower right, the simpler designs on paper are clean with minor rounding to the corners