Sheets of Mongolia, 1966
| Issuer | Date | Desc | State | ||
| - |  |
Mongolia | 5/31/1966 | World Cup 1966, sheet of 1 type | all added |
| - |  |
Mongolia | 5/31/1966 | World Cup 1966, empty sheet (#16771) | incomplete |
| - |  |
Mongolia | 7/10/1966 | Luna 10, sheet of 1 type | incomplete |