Russia
Semyon I. Kharlamov (1921-1990) and Nadezhda V. Popova (1921-2013).
| Country: | Russia |
| Type: | Postal blocks |
| Series: | Heroes of the Soviet Union |
| Nominal: | 12*40 ₽ |
| Year: | 2021 |
| Size: | 170 x 174 mm |
| Perforation: | 12 x 11¾ |
| Mintage: | 11,000 |
