Sonnblick Observatory (1886) engraving by A. Heilmann
93%
| Country: | Austria |
|---|---|
| Issue: | Sonnblick Observatory |
| Date: | 1986-09-05 |
| Print: | Photogravure and Recess |
| Size: | 39 x 30 |
| Perforation: | comb 13½ x 14½ |
| Emission: | Commemorative |
| Format: | Stamp |
| Face Value: | 4 Austrian schilling |
| Print run: | 3400000 |