| BC - Br. Antartic Territory | 1956 (5 Mar) Mawson, Anare - USA. 2sh Australia fkd airmail env, cds + air cachet. Fine. |
U$ | 22 |
| BC - Br. Antartic Territory | 1956 (5 Mar) Mawson, Anare - USA. 2sh Australia fkd airmail env, cds + air cachet. Fine. |
U$ | 22 |