| Added by |
 Iordache Gabriel
|
| Face value | 1 $ - Portuguese escudo |
| Catalog code (Michel) | PT 1429 |
| Catalog code | Stamp Number PT 1361; Yvert et Tellier PT 1409; Stanley Gibbons PT 1685; AFA number PT 1417; Afinsa-Mundifil PT 1359 |
| Series | Development of Technology |
| Place in series | 8 |
| Stamp colour | multicolor |
| Stamp use | Definitive stamp |
| Issue date | 24/01/1979 |
| Designer | CTT, Portugal |
| Paper type | Esmalte Fosforecente |
| Print technique | Offset lithography |
| Printed by | Imprensa Nacional Casa da Moeda |
| Perforation | comb 12½ |
| Height | 21.00 mm |
| Width | 26.00 mm |
| Catalog prices | No catalog prices set yet |
