China. (Indo-Chinese Post Offices In Yunnan). 1907. Registered envelope addressed to Bordeaux bearing Mengtsz. SG 21, 10c rose and French China SG 12, 75c brown/orange tied by Mong-Tseu-chine double ring '6th Mars' with hand-struck 'R' routed via Laokay/Tonkin '9th Mars' and Haiphong '11th Mars' with Bordeaux receiver '16th Avril' on reverse. Lovely item of Registered mail from Yunnan Province.