Sheets of Mongolia, 1961
| Issuer | Date | Desc | State | ||
| - |  |
Mongolia | 6/5/1961 | 40th Anniversary of Mongolian Postal Service, empty sheet (#16759) | incomplete |
| - |  |
Mongolia | 6/5/1961 | 40th Anniversary of Mongolian Postal Service, empty sheet (#16760) | incomplete |
| - |  |
Mongolia | 6/20/1961 | 40th Anniversary of the People's Revolution b, empty sheet (#16761) | incomplete |
| - |  |
Mongolia | 7/10/1961 | 40th Anniversary of the People's Republic of Mongolia c, empty sheet (#16762) | incomplete |
| - |  |
Mongolia | 7/10/1961 | 40th Anniversary of the People's Republic of Mongolia c, empty sheet (#16763) | incomplete |
| - |  |
Mongolia | 7/10/1961 | 40th Anniversary of the People's Republic of Mongolia c, empty sheet (#16764) | incomplete |