Map & inscription
93%
| Country: | Switzerland |
|---|---|
| Issue: | Federal State Planning |
| Date: | 1968-09-12 |
| Print: | Photogravure |
| Size: | 36 x 26 |
| Perforation: | comb 11¾ |
| Emission: | Commemorative |
| Format: | Stamp |
| Face Value: | 30 Swiss centime |
| Print run: | 35621000 |