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)

1911, advertisement "Export-Prämie" + 10 Pfennig in vertical se-tenant with margin, mint never hinged, in margin with remainder of fold, usual booklet perforation, perfect condition, unsigned with certificate Jäschke-L. BPP (2022)