The 2023 Summer Auction - Sale 340 Day 4

1931 a group of 3 FFCs covers from Shanghai and Nanking to France or Germany,all f.w. Peking 2nd Print Airmail, tied by commemorative cds., all bearing C2 Berlin Air Transit marking.

1931年一組3枚經過歐亞航空寄到德國柏林轉運歐洲的首航封，均貼有北京二版航空票，銷紀念戳，並有柏林航空轉運戳記。