Banco Nacional Ultramarino, colour trial 500 Patacas, ND (1963), serial number 000000, blue and multicoloured, Carneiro at right, arms low centre, value at each corner, rev. blue and multicoloured, arms at left, youth and ships at centre (LUM 71, P.52), pencil annotation '10/23/64' in top margin, perforations, red SPECIMEN over print, uncirculated and rare