1918 6c orange and 16c green, blocks of four, 6c n.h., 16c h.r., nicely centered, v.f. (catalogued as singles) cat. $680 (Cat No. C1-2) (Image)

Cat. $680, Est.$200

1918 16c green, top margin arrow and plate number block of six, n.h., well centered, fresh and v.f., with 2007 PFC, cat. $1350 (Cat No. C2) (Image)

Cat. $1350, Est.$1,200

1923 8c-24c, set of three in blocks of four, n.h., one 24c with gum skip, fine-v.f. (catalogued as singles) cat. $1140 (Cat No. C4-6) (Image)

Cat. $1140, Est.$250

1930 Zeppelin, set of three, n.h., 65c and $2.60 with minor gum skips, fine-v.f., with 2019 William T. Crowe certificate, cat. $1640 (Cat No. C13-15) (Image)

Cat. $1640, Est.$500

1930 Zeppelin, 65c-$2.60, set of three, n.h., well centered, each with 2007 PSE certificate graded "VF-XF 85" (SMQ $2,100) (Cat No. C13-15) (Image)

Est.$1,000

1930 Zeppelin, 65c-$2.60, set of three, n.h., fine-v.f., cat. $1640 (Cat No. C13-15) (Image)

Cat. $1640, Est.$700

1930 Zeppelin, 65c-$2.60, set of three, n.h., fine-v.f., cat. $1640 (Cat No. C13-15) (Image)

Cat. $1640, Est.$700

1930 65c green, n.h., well centered, fresh and v.f., with photocopy of a 2019 PFC from which this originated, cat. $240 (Cat No. C13) (Image)

Cat. $240, Est.$250

1930 $1.30 brown, n.h., nicely centered, v.f., with photocopy of a 2016 PFC for a block of four from which this originated, cat. $550 (Cat No. C14) (Image)

Cat. $550, Est.$350

1930 $1.30 brown, bottom plate number block of six, two middle stamps n.h., others l.h., well centered, v.f., cat. $3600 (Cat No. C14) (Image)

Cat. $3600, Est.$2,500

1930 $1.30 brown, used, well centered, with 2019 PSE certificate graded "VF-XF 85" (SMQ $475) (Cat No. C14) (Image)

Est.$300

1930 $2.60 blue, n.h., perfectly centered, beautiful color, with 2018 PSAG graded "98" (SMQ $2,850) (Cat No. C15) (Image)

Est.$2,500

1930 $2.60 blue, bottom plate number single, n.h., well centered, with 2017 PFC graded "VF-XF 85" (SMQ $1,050) (Cat No. C15) (Image)

Est.$700

1930 $2.60 blue, Postal Forgery, used, v.f., cat. $1000 (Cat No. CF1) (Image)

Cat. $1000, Est.$500

1933 50c Century of Progress, n.h., perfectly centered with wide margins, with 2010 PSE certificate graded "Superb 98" (SMQ $500) (Cat No. C18) (Image)

Est.$200

1938 6c dark blue & carmine, vertical pair, imperforate horizontally, complete pane of 50 with selvage on all sides, beautiful rich colors, containing 20 pairs of the error with plate block at top, center line block and bottom arrow block, each stamp with light pencil position number, some pre-print creases, n.h., fresh and intact sheet, fine-v.f. (Datz states that 50 panes were discovered, very few remain intact), catalogued as hinged blocks and pairs, cat. $8800 (Cat No. C23a) (Image)

Cat. $8800, Est.$5,000

1931 Wiley Post & Harold Gatty Record Circumnavigation, June 21 cover with 2c canceled at Mineola, N.Y, Berlin cds (June 24) and Russian cachets, one dated June 29, signed by Post and Gatty (Their journey began on 23 June 1931 at Roosevelt Field in New York and followed a 15,000-mile course across Europe, Russia, and Siberia, due to the lack of suitable airfields nearer the equator. Post and Gatty crossed the Atlantic in a record time of 16 hours and 17 minutes and continued to Berlin, Moscow, and Khabarovsk, then crossed the Bering Sea, landing on the beach near Solomon, Alaska, then to Edmonton, Alberta, arriving finally back at Roosevelt Field after 8 days, 15 hours, and 51 minutes. The pair received a Ticker tape parade in New York City) (Cat No. AAMC 1141) (Image)

Est.$250

1935 Felix Vaitkus' Trans-Atlantic attempt cover franked with US 6c orange (Sep 21) and special overprinted adhesive, also two additional stamps on back, tied by Kaunas (31 Oct) return trip to Chicago, numbered "843" and signed by Lt. Felix Vaitkus, with violet cachet, registry handstamp and other appropriate markings, fine-v.f. (Image)

Est.$500

1930-33 65c card, $1.30 and 50c covers, with appropriate cachets, fine-v.f. (Cat No. C13,14,18) (Image)

Est.$300