SAO TOME E PRINCIPE 20 DOBRAS 2016 UNC CHARAXES BARNSI BUTTERFLY,TREE FROG,MAP OF SAO TOME AND PRINCIPE,Lettering:VINTE DOBRAS Ministerio das Finanças, Comércio e Economia Azul Governado do Banco Central,Decreto Lei no. 6/2016 de 21 de Outubro de 2016 BANCO CENTRAL S. TOMÉ E PRÍNCIPE,Translation:TWENTY DOBRAS Minister of Finance, Commerce, and Blue Economy Governor of Central Bank Law decree no 6/2016 21 October 2016,Central Bank of Sao Tome and Principe,Reverse,Lettering:VINTE DOBRAS Rã de S. Tome (Hyperolius thomensis),BANCO CENTRAL S. TOMÉ E PRÍNCIPE,Translation:TWENTY DOBRAS,Sao Tome tree frog (Hyperolius thomensis)Central Bank of Sao Tome and Principe,Watermark:Rei Amador and butterfly,Printer:De La Rue (Thomas de la Rue, Thomas De La Rue & Co., TDLR), London, United Kingdom (1821-date)