| Issuer | Date | Desc | State | ||
| - | no image | Comoro Islands | 1/18/1988 | empty sheet (#43522) | incomplete |
| - | no image | Comoro Islands | 1/18/1988 | empty sheet (#43523) | incomplete |
| - | no image | Comoro Islands | 1/18/1988 | empty sheet (#43524) | incomplete |
| - | no image | Comoro Islands | 4/18/1988 | empty sheet (#43525) | incomplete |
| - | no image | Comoro Islands | 4/18/1988 | empty sheet (#43526) | incomplete |
| - | no image | Comoro Islands | 11/28/1988 | empty sheet (#43527) | incomplete |
| - | no image | Comoro Islands | 11/28/1988 | empty sheet (#43528) | incomplete |
| - | no image | Comoro Islands | 12/6/1988 | empty sheet (#43529) | incomplete |
| - | no image | Comoro Islands | 12/6/1988 | empty sheet (#43530) | incomplete |
| - | no image | Comoro Islands | 12/27/1988 | empty sheet (#43531) | incomplete |