Russia
Sheet with decorated fields of 9 (3 × 3) stamps
| Country: | Russia |
| Type: | Postal blocks |
| Series: | Birth Centenary of A.M. Prokhorov (1916-2002) |
| Nominal: | 9*21.50 ₽ |
| Year: | 2016 |
| Size: | 118 x 118 mm |
| Perforation: | comb 12 |
| Mintage: | 28,000 |