Sheets of Mauritania, incomplete
| Issuer | Date | Desc | State | ||
| - | no image | Mauritania | 11/29/1937 | empty sheet (#23419) | incomplete |
| - | no image | Mauritania | 9/7/1964 | empty sheet (#23420) | incomplete |
| - | no image | Mauritania | 12/7/1964 | empty sheet (#23421) | incomplete |
| - | no image | Mauritania | 11/4/1968 | empty sheet (#23423) | incomplete |
| - |  |
Mauritania | 8/14/1969 | empty sheet (#23424) | incomplete |
| - | no image | Mauritania | 12/7/1970 | sheet of 3 types | incomplete |
| - | no image | Mauritania | 6/5/1972 | empty sheet (#23428) | incomplete |
| - | no image | Mauritania | 6/20/1973 | Total Eclipse 1973, sheet of 3 types | incomplete |
| - | no image | Mauritania | 12/29/1975 | Apollo-Soyuz, empty sheet (#23431) | incomplete |
| - | no image | Mauritania | 1/26/1976 | American Bicentennial, empty sheet (#23432) | incomplete |
| - | no image | Mauritania | 6/28/1976 | Zeppelin 75th, empty sheet (#23433) | incomplete |
| - |  |
Mauritania | 12/26/1977 | 400th Anniversary of the Birth of Peter Paul Rubens, empty sheet (#23437) | incomplete |
| - | no image | Mauritania | 6/26/1978 | empty sheet (#23438) | incomplete |
| - |  |
Mauritania | 12/11/1978 | empty sheet (#23439) | incomplete |
| - | no image | Mauritania | 8/2/1982 | empty sheet (#23453) | incomplete |
| - | no image | Mauritania | 9/18/1982 | empty sheet (#23454) | incomplete |
| - | no image | Mauritania | 5/19/1985 | empty sheet (#23461) | incomplete |
| - | no image | Mauritania | 8/14/1985 | empty sheet (#23462) | incomplete |
| - |  |
Mauritania | 9/23/1985 | empty sheet (#23463) | incomplete |
| - | no image | Mauritania | 6/12/1986 | empty sheet (#23464) | incomplete |
| - |  |
Mauritania | 6/19/1986 | empty sheet (#23465) | incomplete |
| - | no image | Mauritania | 10/14/1986 | empty sheet (#23466) | incomplete |
| - | no image | Mauritania | 10/14/1986 | empty sheet (#23467) | incomplete |
| - | no image | Mauritania | 10/14/1986 | empty sheet (#23468) | incomplete |
| - |  |
Mauritania | 8/13/1987 | empty sheet (#23469) | incomplete |
| - |  |
Mauritania | 9/10/1987 | empty sheet (#23470) | incomplete |
| - | no image | Mauritania | 9/17/1988 | empty sheet (#23471) | incomplete |
| - | no image | Mauritania | 9/18/1988 | empty sheet (#23472) | incomplete |
| - | no image | Mauritania | 9/2/1990 | empty sheet (#23473) | incomplete |
| - | no image | Mauritania | 12/10/1990 | empty sheet (#23474) | incomplete |
| - | no image | Mauritania | 1/10/1991 | empty sheet (#23475) | incomplete |
| - | no image | Mauritania | 1993 | empty sheet (#23476) | incomplete |
| - | no image | Mauritania | 2/10/1994 | empty sheet (#23477) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23484) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23485) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23486) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23487) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23488) | incomplete |
| - | no image | Mauritania | 2000 | empty sheet (#23489) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23478) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23479) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23480) | incomplete |
| - | no image | Mauritania | 11/5/2000 | empty sheet (#23481) | incomplete |
| - | no image | Mauritania | 11/5/2000 | Butterflies 2000, sheet of 3 types | incomplete |
| - | no image | Mauritania | 11/5/2000 | Birds 2000, sheet of 3 types | incomplete |