An Interesting 1931 Airmail Envelope Sent From Braunschweig (Germany) To Peiping (China) certificate_of_authenticity plus an additional smaller pocket

plus an additional smaller pocket above the front right side angled pocket

Scarce maker

Silvered fittings

missing catch but otherwise extremely fine condition

An Interesting 1931 Airmail Envelope Sent From Braunschweig (Germany) To Peiping (China) certificate_of_authenticity plus an additional smaller pocketThis is an interesting airmail envelope that was sent from Mr. Walter Behrens, from Braunschweig (Germany) of the Behrens Neuheiten Dienst, to the District Accountant of the Head Post Office in Peiping (China). It features three German stamps; 1) A 1 Reichsmark Deutsche Luftpost Zeppelin stamp. 2) A 15 Pfennig Deutsche Luftpost Stamp, and a 3) 10 Pfennig Deutsche Luftpost stamp with all three stamps featuring validation stamps in black ink, dated