China. (Indo-Chinese Post Office in Canton). 1917. Envelope addressed to Lyon, France bearing Canton SG 53, 5c green and SG 54, 10c scarlet tied by Canton-Chine double ring '17th Mai 17', endorsed 'via Siberia' with bold 'COPIE' hand-stamp on face and French Post Office Shanghai (echoppe) transit '21st Mai' on reverse.