
0.09 - 0.11$
price on 06.12.2022
Design illustrates maximum sun-spot activity.
| Country: | Czechoslovakia |
| Type: | Postage stamps |
| Series: | International Quiet Sun Years and Space Research |
| Nominal: | 20 h |
| Year: | 1965 |
| Size: | 44 x 27 mm |
| Perforation: | comb 11¾ x 11¼ |
| Mintage: | 4,100,000 |
International Quiet Sun Years and Space Research
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Czechoslovakia





