| Country | Portugal |
| Authority | Banco de Portugal |
| Currency | Escudo |
| Denomination | 20 |
| Issue Start Date | 13/09/1978 |
| Issue End Date | 04/10/1978 |
| This Notes Issue Date | 13/09/1978 |
| Set Details | Chapa 9 |
| Type | Normal |
| Material | Paper |
| Width in mm | 135 |
| Height in mm | 66 |
| Signatures | Emilio Rui Vilar - Luis Carlos de Assuncao Braz Teixeira |
| Security Features | Security thread
Watermark: Gago Coutinho |
| Description Front | Admiral Gago Coutinho (Portuguese Scientist, Historian, Mathematician, Geographer) |
| Description Back | Inauguration aerial astronomical navigation in 1922 by Gago Coutinho and route undertaken between Lisbon and Rio de Janeiro. |
| Comments | Printed Thomas de la Rue
109, 527,000 printed of this type |
| Source | Paul Neumann |
| BNI Banknote Id | 77597 |
Catalog & Valuation Details
| Source | Catalog # / Reference | Value | Date of Value | Comments |
|---|---|---|---|---|
| 20th Ed SCWPM Modern Issues | P-0176a Sign.3 | $9.00 | 2014 | UNC |
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