About #53A - 500 escudos type 1971
Cape Verde. Portuguese administration. Banco Nacional Ultramarino. 1971 "Infante Henrique" Issue. Date: 16.06.1971 and 29.06.1971 but the first date has never been found (not existing). Material: paper. Solid security thread. Printer: Bradbury, Wilkinson & Company LTD Gravadores. Multicolored front and back printing, predominantly brown and olive green. Description: texts in Portuguese. Portrait of Henry the Navigator (? -1448) on the right. Coat of arms in the center. Combinations of signatures with Administrator and Governador. Back: Seal of the bank on the left (Type II, Lisboa). Texts in Portuguese. Guilloche frame and rosettes. Allegorical woman and ships in the center. Known specimen overprinted in red diagonally on the front and back, numbered "000000". Cancelled by double perforations on the signatures. Another specimen (Color Trial) in blue color, numbered "000000". Signed but without place or date.