This uncirculated 20 Sao Tome and Principe dobra banknote is a standard circulation banknote issued by the Central Bank of Sao Tome and Principe. It is a green banknote that is dated 26 October 2016, bear the signatures of Americo de Oliveira dos Ramos and Helio Silva Vaz de Almeida, and measures 140 mm x 67 mm. Its obverse side shows a Charaxes barnsi butterfly, the national coat of arms, and a view of the Banco Central headquarters building. Its reverse side depicts a stylized cocoa pod, the map of Sao Tome and Principe, and a Sao Tome giant treefrog (Hyperolius thomensis). Security features include a red-to-green windowed security thread with a demetalized BCSTP, a butterfly registration device, and a watermark of Rei Amador with an electrotype butterfly. The details of this note have been verified and TAP Authenticated by Banknote World experts.