USSR
Vertical raster.
| Country: | USSR |
| Type: | Postage stamps |
| Series: | All-Union Agricultural Exhibition, Moscow |
| Nominal: | 30 k |
| Year: | 1939 |
| Size: | 37 x 26 mm |
| Perforation: | line 12½ |
| Mintage: | 3,000,000 |
