Macau, Banco Nacional Ultramarino, 500patacas, ''colour trial', 1963, black serial numbers, blue, orange and multicoloured, Carneiro at bottom right, watermark at left, coat of arms at bottom centre, value at four corners, red 'Specimen' overprinted, reverse green and orange, maiden watching ships and ship seal of the bank of left,(Pick 52ct) PMG 66 EPQ Gem Uncirculated, seldom offered and in fantastic condition, rare
