Centenary of Knapsack Parachute Trial by G.E. Kotelnikov
15*13 ₽ 2012
Russia
| Country: | Russia |
| Type: | Postal blocks |
| Series: | Centenary of Knapsack Parachute Trial by G.E. Kotelnikov |
| Nominal: | 15*13 ₽ |
| Year: | 2012 |
| Material: | coated |
| Perforation: | comb 12½ x 12 |
| Mintage: | 28,000 |