Austria
0.21 - 0.25$
price on 27.11.2022
Sonnblick Observatory (1886), engraving by A. Heilmann
| Country: | Austria |
| Type: | Postage stamps |
| Nominal: | 4 öS |
| Year: | 1986 |
| Size: | 39 x 30 mm |
| Perforation: | comb 13½ x 14½ |
| Mintage: | 3,400,000 |
