Mongolia
| Country: | Mongolia |
| Type: | Postage stamps |
| Series: | 50 Years Revolutionary People's Party |
| Nominal: | 90 Mongolian möngö |
| Year: | 1971 |
| Size: | 53 x 34 mm |
| Perforation: | comb 12¼ x 12½ |
50 Years Revolutionary People's Party
 Party Meeting |  Rider with Flag of Mongolia |  D. Sükhbaatar, V. Lenin |  Effigies of Marx and Lenin, Motifs of Progress 0.87$ |