Ondrejov Observatory and Galaxy
60 h 1967
Czechoslovakia
0.56 - 0.67$
price on 19.02.2023
| Country: | Czechoslovakia |
| Type: | Postage stamps |
| Series: | 13th Congress of the International Astronomical Union |
| Nominal: | 60 h |
| Year: | 1967 |
| Perforation: | comb 11¾ |
| Mintage: | 530,000 |