| Added by |
 Bart Perdieus
|
| Face value | 20 Cent |
| Catalog code (Michel) | NL 899 |
| Catalog code (Scott) | NL 452 |
| Catalog code | Yvert et Tellier NL 871 Stanley Gibbons NL 1055 AFA number NL 899 NVPH NL 906 Unificato NL 871 |
| Stamp colour | Prussian blue |
| Stamp use | Commemorative stamp |
| Print run | 31.322.000 |
| Issue date | 29/04/1968 |
| Designer | Hans Schwarzenbach |
| Paper type | phosphorescent paper |
| Print technique | photogravure |
| Printed by | Joh. Enschedé en Zonen |
| Perforation | 14 x 12 3/4 |
| Height | 26.00 mm |
| Width | 36.00 mm |
| Catalog prices | No catalog prices set yet |
