GUINE BISSAU 50$00 1971 UNC NUNO TRISTAO AT RIGHT,WOMAN STANDING,SHIPS THROUGH THE AGES IN BACKGROUND AT LEFT CENTER,BANK SHIP SEAL AT LOWER LEFT,WATERMARK NUNO TRISTAO,Obverse,Olive-green on multicolor underprint.Portuguese arms at upper center; portrait of Nuno Tristão at right.Script:Latin,Lettering:BANCO NACIONAL ULTRAMARINO DECRETOS LEIS 39211 e 44891 GUINÉ CINQUENTA ESCUDOS LISBOA, 17 de DEZEMBRO de 1971.Translation:National Bank Overseas Decree-Laws 39221 and 44891 Guinea,Fifty Escudos Lisbon, December 17, 1971.Reverse,Olive-green.Woman standing, ships through the ages in background at left center, bank ship seal at lower left.Script:Latin,Lettering:BANCO NACIONAL ULTRAMARINO PAGÁVEL NA GUINÉ CINQUENTA ESCUDOS,Translation:National Bank Overseas Payable in Guinea Hundred Escudos ,Watermark;Portrait of Nuno Tristão,Printer;Bradbury Wilkinson and Company, United Kingdom (1856-1990)Signatures; Francisco José Vieira Machado (FJVM) Governor Luís Esteves Fernandes (LEF)Administrator