USSR
| Country: | USSR |
| Type: | Postal blocks |
| Series: | All-Union Agricultural Exhibition (BCXB) |
| Nominal: | 4*40 k |
| Year: | 1955 |
| Material: | Chalk surfaced |
| Size: | 156 x 116 mm |
| Perforation: | frame 12½ x 12 |
| Mintage: | 200,000 |
All-Union Agricultural Exhibition (BCXB)
 Pavilion of the Russian SFSR |  Pavilion of the Byelorussian SSR |  Pavilion of the Ukrainian SSR |