1918 6c orange and 24c carmine rose and blue, corner margin arrow blocks of four, n.h., fairly well centered, also two 24c singles (h.r. and used), fine-v.f., cat. $1055 (Cat No. C1/3) (Image)

Cat. $1055, Est.$250

1918 16c green, top plate number and arrow block of six, hinged (two stamps n.h.), fine-v.f., with 2014 PSE certificate, cat. $900 (Cat No. C2) (Image)

Cat. $900, Est.$350

1923 8c dark green, 16c dark blue and 24c carmine, set of three Washington, D.C. Phillip Ward FDCs, v.f. (Cat No. C4-6) (Image)

Est.$500

1930 Zeppelin set of three, first two l.h., $2.60 n.h., natural gum creases, well centered, v.f., with 2008 Philatelic Foundation certificates, cat. $1385 (Cat No. C13-15) (Image)

Cat. $1385, Est.$750

1930 Zeppelin set of three left plate number singles, set of three, 65c with slightly disturbed gum, l.h., v.f., cat. $1060 (Cat No. C13-15) (Image)

Cat. $1060, Est.$500

1930 Zeppelin set of three bottom margin plate number blocks of six, n.h., all well centered with beautiful colors, fresh and v.f., a choice set of Zepp Plate Blocks, cat. $15200 (Cat No. C13-15) (Image)

Cat. $15200, Est.$9,000

1930 65c green and $2.60 blue, used on card and cover, with appropriate markings, fine-v.f. (Cat No. C13,15) (Image)

Est.$300

1930 $1.30 brown, n.h., nicely centered, v.f., with 2017 PFC, cat. $550 (Cat No. C14) (Image)

Cat. $550, Est.$300

1930 $1.30 brown, n.h., near perfect centering, with 2018 PSAG certificate graded "95" (SMQ $1,350) (Cat No. C14) (Image)

Est.$750

1930 $1.30 brown, n.h., well centered, v.f., with photocopy of a 2017 PFC for a block of four from which it originated, cat. $550 (Cat No. C14) (Image)

Cat. $550, Est.$350

1930 $1.30 brown, used, near perfect centering, with 2015 PSE certificate graded "XF-Sup 95" (SMQ $850) (Cat No. C14) (Image)

Est.$500

1930 $2.60 blue, left sheet margin single, used, with 2013 PSE certificate graded "VF 80" (SMQ $600) (Cat No. C15) (Image)

Est.$350

1939 30c Winged Globe, selection of eight Top or Bottom Plate No. blocks of six, n.h., but occasional l.h. in selvage, mostly fine-v.f. (Cat No. C24) (Image)

Est.$250

1978 Wright Brothers, se-tenant vertical pair with ultramarine and black omitted, n.h., v.f., cat. $500 (Cat No. C92b) (Image)

Cat. $500, Est.$250

1925 (9 June) MacMillan Arctic Expedition cover franked with 4x1/2c regular issue, tied by Philadelphia Navy Yard departure, with "Air Mail Phila-Boston via MacMillan Expedition" four-line cachet, v.f. (Cat No. AAMC TO1031) (Image)

Est.$250

1929 (29 Apr) Cramer & Gamble, Nome Alaska-Siberia Flight, cover with 5c franking, Fairbanks, Alaska April 29, 1929 datestamps, v.f., signed by Willard S. Gamble and Parker D.Cramer. Only two covers from sender Schiller are known from their 10,000+ miles journey, annotated and stamped May 3, 1929 upon return to New York (Parker Cramer also served as the chief pilot for the second Wilkins-Hearst Antarctic expedition of 1929-30. In addition, he flew from New York to Nome, Alaska, and on to Siberia) (Image)

Est.$500

1930 (3 May) first flight cover from Miami to Venezuela, corresponding "USA-Canal Zone-Venezuela" cachet, 10c orange added on arrival in Puerto Cabello (May 6 1930), with Cristobal (May 4) and Colon, Panama (Nov 18) pmks on back, v.f. (Image)

Est.$250

1930 Mears and Brown non-stop air mail flight cover carried from New York to Harbour Grace, from where it was sent registered to New Jersey (Aug.2), various transit postmarks on reverse, with handwritten note on reverse by W.H. Kennedy (Postmaster at Harbour Grace) "Delivered to me by John Henry Mears who landed at Hr. Grace airport from airplane, City of New York August 2, 1930 at 4.25 PM", v.f. (Image)

Est.$350

1930 (1 Aug) Mears and Brown attempted Round-the-World flight, card carried from US to Harbour Grace, Newfoundland, where the plane crashed upon take-off, v.f., scarce - only 25 cards carried (Image)

Est.$400

1931 (24 May) Hillig and Hoiriis Transatlantic Flight, New York to Copenhagen. The flight ended prematurely at Harbor Grace, Newfoundland, from where the mail was forwarded by ship, arriving in Copenhagen on 3rd July; cover signed by both pilots, with Copenhagen and Liberty pmks, only 30 covers carried (Cat No. AAMC TO1140a) (Image)

Est.$250

1932 Germany-Iceland-Canada-USA Transatlantic flight Wolfgang Von Gronau, cover with Canadian, USA, Philippines, Japan, Netherlands Indies, Ceylon and Indian adhesives, cancelled at their prospective stops, including Unalaska, Alaska (Aug 29) pmk, v.f., signed by Von Gronau, also three newspaper clippings (Image)

Est.$1,000

1933 Darius-Girenas Transatlantic flight cover franked with 3c Washington, tied by Brooklyn July 15 cds, also "Lituanica" and corresponding violet cachets, Kaunas July 18 arrival pmk on back, some adhesive toning as always, otherwise fine (Image)

Est.$200

1937 (14 July) World Record Non-stop Transatlantic flight, Moscow-San Jacinto, by Soviet aviators Gromov, Danilin and Yumashev on their long-distance record flight via the North Pole. The airplane was a single-engine ANT-25-1 which flew 6262 miles in 62 hours and 17 minutes, signed by the three crew-members, v.f. (no official mail was carried on the flight) (Image)

Est.$250

1937 (28 July) World Record Non-stop Transatlantic flight, Moscow-San Jacinto, by Soviet aviators Mikhail Gromov, Danilin and Andre Yumashev on their long-distance record flight via the North Pole. The airplane was a single-engine ANT-25-1 which flew 6262 miles in 62 hours and 17 minutes, beautifully illustrated cover signed by two crew-members, also by Sir Hubert Wilkins, v.f. (no official mail was carried on the flight) (Image)

Est.$150

1938 Howard Hughes Record Flight Around the World, airmail cover addressed to Florida, triple franking with French and Russian adhesives, all appropriate markings and actually signed by Howard Hughes and Harry Conner, one stamp defective, otherwise fine and scarce item, one of only a few covers actually signed by Hughes (Image)

Est.$2,500