KATSCHER, 1 Mark red-carmine horizontal pair Numeral issue 1920 as multiple franking on registered letter to Brünn / Czechoslovakia, double-circle KATSCHER 30 3 20 (Kr. LEOBSCHÜTZ) b (OS handbook No. 140.3), passed German currency control in Dresden: yellow resealing strip / control label (OS handbook No. III A 3) and violet "90" handstamp (OS handbook No. Ca), envelope folded at centre, otherwise age and use marks typical of period