| Issuer: Mongolia
Issue: World Aerobatic Championship Date: 8/4/1980 (1980 sheets) INCOMPLETE Block 1 (0, 0 x 0) 0, 0: 4t d=Jak 52 |
External links: Colnect 249703..onsin_USA_1980 Record of changes |
| Issuer: Mongolia
Issue: World Aerobatic Championship Date: 8/4/1980 (1980 sheets) INCOMPLETE Block 1 (0, 0 x 0) 0, 0: 4t d=Jak 52 |
External links: Colnect 249703..onsin_USA_1980 Record of changes |
