C14 VF tied on 1930 First Round Trip Flight Lakehurst - Friedrichshafen via Seville w/ appropriate but faded cachets/markings F-VF (Image)

Cat. $375 SE

C15 tied Varick St 4/26/30 cancel on First Pan-American Graf Zeppelin flight cvr w/ all appropriate cachets & markings, stamp F-VF+, cvr some edge wear o/w F-VF (Image)

Cat. $675 SE

Group of (8) diff #C18 on 1933 Graf Zeppelin covers, all Century of Progress flights, incl Sieger #241A, 242B, 243A, 243C, 243D, 244A, 244B, 244C (tear), w/ R/S cachets, typed or written addr, gen F-VF (Image)

Est. $200-300 LE