Banco Nacional Ultramarino, Specimen 4-Tangas, 1 October 1917, serial no. 000000 - 305000 in red, brown and multicoloured, green steamship seal low centre, NOVA GOA in green top centre, rev. multicoloured, maiden at centre (P.19), '15.1.32' in ink in top margin, perforated CANCELLED, good extremely fine, rare