| Issuer | Date | Desc | State | ||
| - | no image | Bhutan | 1/10/2012 | empty sheet (#51201) | incomplete |
| - | no image | Bhutan | 3/1/2012 | empty sheet (#51202) | incomplete |
| - | no image | Bhutan | 3/1/2012 | empty sheet (#51203) | incomplete |
| - | no image | Bhutan | 10/10/2012 | empty sheet (#51210) | incomplete |
| - | no image | Bhutan | 10/10/2012 | empty sheet (#51211) | incomplete |
| - | no image | Bhutan | 10/13/2012 | empty sheet (#51204) | incomplete |
| - | no image | Bhutan | 10/13/2012 | empty sheet (#51205) | incomplete |
| - | no image | Bhutan | 10/13/2012 | empty sheet (#51206) | incomplete |
| - | no image | Bhutan | 10/13/2012 | empty sheet (#51207) | incomplete |
| - | no image | Bhutan | 10/13/2012 | empty sheet (#51208) | incomplete |
| - | no image | Bhutan | 10/13/2012 | empty sheet (#51209) | incomplete |