Germany Reich. Michel 455 eller Michel 455 eller Scott 35 brev,, 1931 Graf Zeppelin 1 RM red on registered printed matter air mail cover to Buenos Aires, Argentina, cancelled SCHÖNEBECK-BAD SALZELMEN 18.3.32 and two different cachets, e.g. "LUFTSCHIFF GRAF ZEPPELIN 1. SÜDAMERIKAFAHRT 1932".