2 Reichmark and 4 Reichmark "1. South America flight", 2 Reichmark watermark X, 4 Reichmark watermark Y, each vertical pair from left margin of sheet, cancelled "FRIEDRICHSHAFEN * (Lake Constance) b 18.5.30", very fine, no signature, photo expertize Andreas Schlegel BPP (2025) "the quality is perfect. ", Michel 2.000.-