CHINA 1921 (July 1) group of three Tsinan to Peking first flight covers

CHINA 1921 (July 1) group of three Tsinan to Peking first flight covers, two bearing the 15c Air and 1½c (one a printed Theodore Siddall envelope), the third with an attractive mixed franking, each with the appropriate Shanghai chop, arrival and departure strikes. In addition, a pair of covers carried on the return flight from Peking. A fine & scarce group.

Estimate:£300

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