1973, Progress in Electronics, 11c multicolored, top sheet margin single with vermilion and olive (litho) omitted, full OG, NH, VF, C.v. $800 (Image)

2012, View of Lancaster County, PA, $1.05 multicolored, bottom left corner sheet margin plate No.S11111 vertical pair, die cutting omitted on front, perfect quality, backing paper intact, VF, C.v. $700 (Image)

PIONEER FLIGHT COVERS - CHARLES A. LINDBERGH (1902-74) INAUGURATING FIRST FLIGHT COVER WITH HIS AUTOGRAPH: April 15, 1926, Illustrated First Flight Contract Air Mail (CAM-2) Cover on line Chicago - St. Louis, posted into the mail in Springfield, IL on return flight, franked by five stamps, two nice impressions of violet flight cachet, Chicago ''Apr.15.9:30pm.1926'' machine arrival ds on reverse, signed at the bottom left corner, mostly VF (Image)

AROUND THE WORLD IN EIGHT: June 23-July 1, 1931, cover delivered by Record "Winnie Mae" Flight by pilot Wiley Post and navigator Harold Gatty (signed by them at the top), started from Roosevelt Field at Mineola, NY with 14 transit points including Berlin, Moscow, Omsk, Novosibirsk, Irkutsk, Blagoveschensk, Khabarovsk and etc., two violet Dobroliot markings were applied, Mineola "Jul.1.1931" arrival ds is alongside and on reverse, VF and scarce (Image)