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)

1920, Bavaria farewell issue 1 stamp (postage stamp) overprint Essay in a sheet of 25 with 20 different overprints and sheet margins on three sides. The unused multiples are partially separated and supported with hinges resp. have adhesion on the reverse. Despite the imperfections a decorative and in this form very rare proof unit, certificate Bauer BPP (2023) (Theuss ex E1-20)