I.P.O. established Tibet Postal District in June 1910, and used the CIP - Coiling Dragon stamps. The postage rate was the same as in Sinkiang and Mongolia.
From Lhasa to Gyangtse. Lhasa Large Double Circle Trilingual Lunar Dater of Apr. 29, 1911.
On the back CIP 1c and 2c canceled by Lhasa Large Double Circle Trilingual Lunar Dater of Apr. 29, 1911. Arrival Gyangtse Large Double Circle Trilingual Lunar Dater of May 3, 1911.