Heinrich Köhler 383rd Auction – Day 5 Germany 1849–2000 – German Empire, German Colonies with Occupation Issues (G.R.I. and MAFIA), Plebiscite Areas, Germany after WWII – The Erik B. Nagel Collection (part III)

1900, crown/eagle 20 Pfennig with "PEKING DP 7.5.01" as postage paid single franking on field post cover with cancellation to Erlau with arrival postmark. The envelope with traces of ageing and transport, the stamp (postage stamp) in perfect condition. Very rare use during the Boxer riots in the Petschili area, certificate Jäschke-L. BPP (2022)