2, 50 Mark on 2 Mark Germania "North and South" in intaglio printing, dark rose carmine, from the left, unperforated side margin, sheet block 9, with plate flaw IV, according to Infla Band 79 "Red line over the left wing" as a single franking on a heavily overfranked registered local letter, postmarked "ERFURT * 1 a 9. 7. 20 5-6 N", very good condition, signed Duentsch in the upper left corner and "b" next to the stamp, INFLA signature Bauer BPP "b" on the reverse (double), photographic finding Dieter Weinbuch BPP (2025), "The stamp is in flawless quality, envelope with slight signs of transport and small discolorations", Michel / Infla Band79 600.-