Sheets of Mexico, 1968
| Issuer | Date | Desc | State | ||
| - |  |
Mexico | 1968 | empty sheet (#1379) | incomplete |
| - | no image | Mexico | 3/21/1968 | empty sheet (#50513) | incomplete |
| - | no image | Mexico | 3/21/1968 | empty sheet (#50514) | incomplete |
| - | no image | Mexico | 3/21/1968 | empty sheet (#50515) | incomplete |
| - | no image | Mexico | 3/21/1968 | empty sheet (#50516) | incomplete |
| - | no image | Mexico | 10/12/1968 | empty sheet (#50517) | incomplete |
| - | no image | Mexico | 10/12/1968 | empty sheet (#50518) | incomplete |
| - | no image | Mexico | 10/12/1968 | empty sheet (#50519) | incomplete |
| - | no image | Mexico | 10/12/1968 | empty sheet (#50520) | incomplete |