20 Escudos 4.10.1978 (Front: Admiral Carlos Viegas Gago Coutinho (17 February 1869 – 18 February 1959); Navigation tools: sextant, astrolabe and a direction corrector. Portuguese coat of arms (Armillary sphere + the quinas + the castles). Back: Seaplane Fairey FIII-D MkII dubbed Lusitania, in which Sacadura Cabral and Gago Coutinho left Lisbon on 30th of March 1922. Ship. Map outline of the route of the flight. Belém Tower (Torre De Belem) at the entrance of Tagus River leading to Lisbon. Watermark: Admiral Gago Coutinho. Security features: Running serial numbers on the obverse of the banknote. Watermark. Segmented embedded 0.5 mm wide metallic security strip. Main colour: Green. Author: João de Sousa Araújo. Signatures: (as depicted) Emílio Rui da Veiga Peixoto Vilar (O Vice-Governador); Vítor Manuel Ribeiro Constâncio (O Vice-Governador). Issuer: Bank of Portugal. Date of Issue: 4 October 1978. Validity: Redeemable until 30-12-2022. Material: Cotton paper. Printing method: Intaglio. Printer: Thomas De La Rue) (Serial Nos: XG0106xx) UNC
Dimensions: 136 x 66 mm
Catalogue Number: P-176b (Albert Pick; Krause)
Grade/condition: Uncirculated (UNC) (new, unused, mint)
Texts: Banco de Portugal. Vinte Escudos ouro. Twenty Escudos. Lisboa, 4 de Outubro de 1978. 1922 - Almirante Gago Coutinho inicia a navegaçáo aérea astronómica.
Dimensions: 136 x 66 mm
Catalogue Number: P-176b (Albert Pick; Krause)
Grade/condition: Uncirculated (UNC) (new, unused, mint)
Texts: Banco de Portugal. Vinte Escudos ouro. Twenty Escudos. Lisboa, 4 de Outubro de 1978. 1922 - Almirante Gago Coutinho inicia a navegaçáo aérea astronómica.
