Sheets of Tristan da Cunha, 1973
| Issuer | Date | Desc | State | ||
| - |  |
Tristan da Cunha | 10/15/1973 | 100th Anniversary of Visit of HMS Challenger, sheet of 4 types |
| Issuer | Date | Desc | State | ||
| - | |
Tristan da Cunha | 10/15/1973 | 100th Anniversary of Visit of HMS Challenger, sheet of 4 types |