Fotographic objective by Josef Petzval (1807-91)
93%
| Country: | Austria |
|---|---|
| Issue: | Europhot Congress Vienna |
| Date: | 1973-10-08 |
| Print: | Photogravure and Recess |
| Size: | 35 x 30 |
| Perforation: | comb 14 |
| Emission: | Commemorative |
| Format: | Stamp |
| Face Value: | 2.50 Austrian schilling |
| Print run: | 3200000 |