Banco Nacional Ultramarino, colour trial 10-Patacas, ND (1963), serial number 000000, green and multicoloured, arms low centre, Carneiro at right, rev. green, arms a t left, youth and ships at centre (LUM 36, P.50), pencil date 10/23/64 in top margin, perforations, red SPECIMEN overprint, uncirculated, rare