DEUTSCH-RASSELWITZ, 10 Pfg red-orange, 75 Pfg dark green vertical pair, Steelworks and Dove of Peace on sealed registered letter to Romanshorn / Switzerland, double-circle DEUTSCH-RASSELWITZ 11 11 20 * (OBERSCHL) *, arrival (14.11.1920) on reverse, passed German currency control in Stuttgart: resealing strip / control label with code "19", unlisted in OS handbook, plus violet "60" (front) and "84" (reverse) handstamps, also unlisted, age and use marks typical of period