USSR
0.1 - 0.12$
price on 16.10.2022
| Country: | USSR |
| Type: | Postage stamps |
| Series: | Soviet Geology |
| Nominal: | 4 k |
| Year: | 1968 |
| Material: | Chalk surfaced |
| Size: | 37 x 37 mm |
| Perforation: | comb 11½ |
| Mintage: | 4,000,000 |
Soviet Geology
 Prospector with Crystals 0.1$ |  The Scheme of Deep Explosion and Air Reconnaissance 0.08$ |  Derrick and Camp of Prospectors 0.14$ |