10 Pfg. Plebiscite-Aufdruckausgabe in the horizontal block of six with lower margin and right cut Teilzischensteg, as well the two of them left stamps only with oblique part overprint and others 4 items without overprint, very scarce and decorative variety in perfect unhinged mint condition, Corresponding certificate with photograph Gruber BPP: ". . . This is a large Upper Silesia rarity"!