China. (French Expeditionary Force In Kouang-Tcheou-Wan). 1904. Stamp-less envelope addressed to France endorsed 'Corps d'Occupation du Tonkin' cancelled Fort Bayard/ Indo-Chinese Francaise double ring '31st Mars' with undated 'Corps Exped' and military cachet 'Ambulance et Agence Santitaire/Le Medicen Chef de Quang-Tcheou' in violet on face routed via Haiphong/ Tonkin '3rd Avril' and Toulon arrival on reverse. Very fine item from the French Military Detachment in the French Territory of Kouang-Tcheou.