China. (French Indo-China). 1938. Air Mail envelope addressed to Paris bearing SG 237, 30c violet tied by Tourane /Annam date stamp with boxed 'Franchise Militaire/ Aviso Colonial / Savorgnan De Brizza' in red and circular 'Marine Francaise / Service a la Mer' in red, routed via Hanoi with Paris arrival. Scarce item.