| Added by |
 Bart Perdieus
|
| Face value | 20 + 10 Cent |
| Catalog code (Michel) | NL 959 |
| Catalog code (Scott) | NL B471 |
| Catalog code | Yvert et Tellier NL 928 Stanley Gibbons NL 1127 AFA number NL 959 NVPH NL 986 Unificato NL 928 |
| Stamp colour | multicolor |
| Stamp use | Semi Postal stamp |
| Print run | 1.030.561 |
| Issue date | 20/04/1971 |
| Designer | Tel-Design Associated |
| Paper type | normal paper |
| Print technique | Offset lithography and Photogravure |
| Printed by | Joh. Enschedé en Zonen |
| Perforation | 12 3/4 x 14 |
| Height | 36.00 mm |
| Width | 25.00 mm |
| Catalog prices | No catalog prices set yet |
