Morocco. (French Occupation). 1930. Air Mail envelope written from Riad Damia addressed to France bearing French 'Sower' Yvert 237, 40c ultramarine (pair) tied by 'Poste Aux Armees/ Ksar-Es-Souk' double ring, endorsed 'Par Avion' with 'Postes Aux Armees/ 419' date stamp on reverse. Scarce item from the French Occupation of Maroc.