1 Kreuzer black, arms on lined background, perforations intact on all sides, horizontal strip of three as multiple franking, double-circle cancellation "DONAUESCHINGEN 31 AUG", addressed to Oberbaldingen. Left flap missing. Very deep-coloured, fresh stamps, original condition, not repaired, stamps originally attached. Correctly rated first-weight-step letter, unsigned, Franz Stegmüller BPP photo certificate (2022), Mi. 700.-, ex Burrus collection