1909 Lhasa to Calcutta. Registered cover, f.w. a red strip registeration label with Chinese character by a Chinese officer Wen Tsung Yao.
1909 Lhasa to Calcutta. Registered cover, f.w. a red strip registeration label with Chinese character by a Chinese officer Wen Tsung Yao. F.w. Indian KEVII 1a in strip of 3, tied by Gyantse-Tibet Siliguri Base type B2 cds, matching with registered mark alongside. Arrived Calcutta (11 Jan). A forerunner mail of Imperial Post in Tibet.1909年拉薩寄加爾各答。掛號封，由中國官員貼上手寫批注之紅色掛號標籤。加貼印度愛德華七世1安娜橫三連，銷江孜英局B2型日戳，另鈐掛號章。1.11抵加爾各答。可謂大清西藏郵政之先行例子。
