"Ob" Diesel-electric Icebreaker and Mirnyi Station
6*7 ₽ 2006
Russia
| Country: | Russia |
| Type: | Postal blocks |
| Series: | 50th Anniversary of Russian Antarctic Research |
| Nominal: | 6*7 ₽ |
| Year: | 2006 |
| Material: | chalky |
| Size: | 125 x 135 mm |
| Perforation: | comb 11¾ x 12 |
| Mintage: | 65,000 |