3 Kopecks postal stamp with black overprint "Pernau 8. VII 1941", perforated, overprint flaw V "year date in the overprint 7941" inside a block of four with three normal stamps, mint never hinged, stamp with overprint flaw small rubbed spot otherwise pristine with manufacture contingent sheet crease, issued only 122 examples, unsigned, photo expertize Gerhard Krischke BPP, Michel 1.950.-