| Airmails - World | 1937 (4 May) First flight Dahomey, Cotonou - Dakar, Senegal (7 May) Multifkd env. Special red cachet. |
U$ | 32 |
| Airmails - World | 1937 (4 May) First flight Dahomey, Cotonou - Dakar, Senegal (7 May) Multifkd env. Special red cachet. |
U$ | 32 |