1912, airmail on the Rhine and Main, 10 respectively 20 Pfg airmail stamp, latter distinctive off-center, with 5 Pfg Germania on 2 airmail postcards from \"airmail on the Rhine and Main / Worms 16.6.12\" respectively \"Offenbach 15.6.12\" to Celle respectively Hattingen, the 10 Pfg left and above a little flat perforated, the 20 Pfg in perfect condition, decorative file copy pair, Si. 230.-