Indo-China. 1941. Air Mail envelope addressed to France bearing Indo-China Yvert 138, 12c turquoise, Yvert 155, 1c brown, Yvert 159, 5c violet, Yvert 160, 6c orange/red, Yvert 166, 30c brown/orange and Yvert 201, 18c blue tied by Bien-Hoa/Chochinchine date stamp with military cachet 'Bataillon de L' Air No 121/L' Officier Di Tan' in violet, endorsed 'via Bagdad' routed via Austria with Vienna circular '9' censor cachet and oval 'Ouvert Par Les Autorite Controle' with 'Controle' label applied in Marseille and Toulouse receiver. Scarce item of censored mail.