| Issuer | Date | Desc | State | ||
| - | no image | Papua New Guinea | 1/22/2006 | 80th birthday of Queen Elizabeth II, sheet of 3 types | incomplete |
| - | no image | Papua New Guinea | 1/22/2006 | 80th birthday of Queen Elizabeth II, sheet of 4 types | |
| - | no image | Papua New Guinea | 5/17/2006 | World Cup 2006, sheet of 4 types | |
| - | no image | Papua New Guinea | 11/15/2006 | empty sheet (#23517) | incomplete |