Mongolia
| Country: | Mongolia |
| Type: | Postage stamps |
| Series: | Ha-lo-hsin (Khalka) River Battle, 20th anniversary |
| Nominal: | 40 Mongolian möngö |
| Year: | 1959 |
| Perforation: | comb 12 |
| Mintage: | 420,000 |
Ha-lo-hsin (Khalka) River Battle, 20th anniversary
 Battle Emblem |  Battle Monument 0.82$ |