| Airmails - World | 1937 (7 March) First flight. Guinea, Conakry - Morocco, Casablanca (9 March) Multifkd env + red cachet. Signed Feldkirchner. XF. |
U$ | 28 |
| Airmails - World | 1937 (7 March) First flight. Guinea, Conakry - Morocco, Casablanca (9 March) Multifkd env + red cachet. Signed Feldkirchner. XF. |
U$ | 28 |