USSR
| Country: | USSR |
| Type: | Postage stamps |
| Series: | 140th Birth Anniversary of Karl Marx |
| Nominal: | 40 k |
| Year: | 1958 |
| Size: | 26 x 37 mm |
| Perforation: | line 12¼ |
| Mintage: | 1,500,000 |
140th Birth Anniversary of Karl Marx
 140th Birth Anniversary of Karl Marx (1818-1883) |  140th Birth Anniversary of Karl Marx (1818-1883) 0.19$ |  140th Birth Anniversary of Karl Marx (1818-1883) 1.6$ |