12 88 Pfg reconstruction, proof in red on painted, gray typewriter paper, left unperforated, in the horizontal pair with on all sides perforated proof, in perfect condition mint never hinged, photo expertize Dr. Jasch BPP (2017) : "genuine and immaculate. . . A gum mat strip is manufactured and places no lack dar. ", Michel 2.250.- - provenance. Collection post senior administrative officer Friedrich Schneider