1921 (Jul 1) Shanghai-Peking First Flight PPC endorsed "TO BE DESPATCHED BY 1st MAIL OF/AERIAL SERVICE" with 30c Airmail tied to view side by Shanghai datestamp, on reverse 1½c Junk tied by Shanghai datestamp with Peking arrival datestamp alongside. Visually appealing. (Image)

Estimate AU$100-200
Min. Bid. AU$80