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 violet-ultramarine in a block of four with cancellation "SHANGHAI DP *a 24.12.00", right bottom stamp with barely visible corner defect on the image side and the multiples is separated on the left, otherwise in perfect condition. An extremely scarce multiples of the so-called "Petschili" issue with certificate R. Steuer BPP (2006)