German Empire Upper Silesia Plebiscite 10 Pf. on 20 Pf. Overprint

German Empire (Upper Silesia Plebiscite Area) · 1920 · 10 Pf. on 20 Pf.

A dull grey-blue definitive stamp of the German Empire, featuring a large numeral '20' design, with a two-line red overprint '10 Pf.' for the Upper Silesia plebiscite area.

This stamp was issued in 1920 for the Upper Silesia plebiscite, a post-World War I vote mandated by the Treaty of Versailles to decide the region's national affiliation between Germany and Poland.