p176b: 20 Escudos from 1978

4.10.1978. Green (shades) on multicolor underprint. Admiral Gago Coutinho at right. Ch. 9. Large or small size numerals in serial number. Back: Airplane. Watermark: Admiral Gago Coutinho. 6 signature varieties.

• Country & Pick Number:Portugal p176b
• Denomination & Currency:20 Escudos
• First Year of Issue:1978
• Issue Type: Regular Issue