| Added by |
 Radu Florin
|
| Face value | 3,50 $ - escudo portughez |
| Catalog code (Michel) | PT 1141 |
| Catalog code (Scott) | PT 1108 |
| Catalog code | Yvert et Tellier PT 1121 Stanley Gibbons PT 1427 AFA number PT 1129 Afinsa-Mundifil PT 1111 Unificato PT 1121 |
| Stamp colour | multicolor |
| Stamp use | Commemorative stamp |
| Print run | 3.000.000 |
| Issue date | 24/09/1971 |
| Designer | CTT, Portugal |
| Paper type | Polished |
| Print technique | Offset lithography |
| Printed by | Casa da Moeda de Portugal |
| Perforation | comb 12 |
| Height | 22.00 mm |
| Width | 40.00 mm |
| Catalog prices | No catalog prices set yet |
