German postal supervisory authorities 1918–1925; International parcel cards 1907–1933; The Allied occupation of the Rhineland 1918–1930 – The Robin Pizer Collections

German Reich 1920, Postal Censorship Berlin W8, franked insured cover from "FLENSBURG 9.3.20" to Zoppot with label "Abs. zurück/Statistik für Warenverkehr erforderlich", two-line handstamp "Bei Rückgabe von Überwachungsstelle ...g" and sealing wax of post office Berlin 017 on reverse.

German Reich 1919, Germania 15 pfennig tied by postmark "EUPEN 27.2.19" to commercial cover with official seal handstamp "Bürgermeisteramt Kettnis Kreis Eupen" to Wolfen. Extremely rare mayor censorship from the district of Eupen.

German Reich 1922, fee label with value "400" (mark) tied by postmark "MEISSEN 3 11.8.22" to complete parcel card via Berlin with straight-line "Zollamtlich geprüft" to Sandnes, Norway with arrival and customs postmarks of Sandnes. This fee label only occurs on parcel cards and only three copies are known to date.