1913, airmail on the Rhine / Düsseldorf, 10 Pfg on airmail postcard \"airmail on the Rhine / DÜSSELDORF 21.4.13\" to Stettin, without franking, therefore with postage due with appropriate frame cancel, airmail stamp above from the sheet cut, otherwise well perforated, in this kind unusual and very rare, Si. 200.-

1913, airmail on the Rhine / Düsseldorf, 10 Pfg on airmail postcard with 5 Pfg Germania from \"airmail on the Rhine / DÜSSELDORF 22.4.13\" to the \"box to the three seraphim\" to Berlin, 10 Pfg two short teeth lower left, otherwise well perforated, card in perfect condition, Si. 150.-