ChinaChina (French) 1903 Registered envelope to the Constructor of the Railway
(Yunnan Province, China), bearing French China 5c Green Yvert 23 (10), tied by Shan-ghai double-ring with Boxed registered handstamp , routed via the British Post Office Hong Kong with Registered sent via Haiphong Tonkin with French Post Office Mongtze arrival. Superb cover for the exhibitor. (pt)
