CHINA 1921 Air set (5 vals) affixed to postal record sheet

CHINA 1921 Air set (5 vals) affixed to postal record sheet, each value tied by special Shanghai airmail chop, the sheet with 'Shanghai 1 JUL 21' c.d.s, the first day of issue. Also the 1929 set on postal record sheet, each value with special Shanghai airport chop in red. A fine & scarce pair of sheets.

Schätzpreis:€236.71

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