Nice cover from Haute-Vorta to France

A nice cover from Bobo Dioulasso (Haute-Volta) to Nantes (France).
Bobo Dioulasso, 30.5.1972.

Note: Haute-Volta (Upper Volta) is current Burkina Faso.
A stamp on the cover: Scott#248, 40fr. Hypolimnas misippus.
I bought this cover from a stamp dealer.