C18, 50¢ Graf Zeppelin on Zeppelin Flight/FDC Cover, F-VF, tied to cover with NY FDOI machine ccl; Friedrichshafen to Pernambuco, Brazil flight (Sieger no. 241.B, cv € 600. @$715). Cover with rectangular "VIA/AIR MAIL" label showing a biplane; (2) small tears at bottom, o/w nice and clean with all appropriate markings (Image)

$700