1918 6c orange, upper left sheet corner margin block of six, marginal notations at left, stamps n.h., minor gum skips at upper right, fresh and fine (Cat No. C1) (Image)

Est.$100

1918 16c green, n.h., well centered, with 2017 PSAG certificate graded "95" (SMQ $425) (Cat No. C2) (Image)

Est.$200

1918 24c carmine rose and blue, n.h., near perfect centering, fresh color, with 2016 PSAG certificate graded "98" (SMQ $1,500) (Cat No. C3) (Image)

Est.$700

1923 24c carmine, n.h. well centered, with 2019 PSE certificate graded "XF-Sup95" (SMQ $450) (Cat No. C6) (Image)

Est.$200

1927 20c yellow green, left margin plate number single, well centered with jumbo margins, with 2020 PSAG certificate graded "95J" (SMQ $135) (Cat No. C9) (Image)

Est.$100

1930 Zeppelin, 65c-$2.60, set of three, l.h., well centered, v.f., signed Calves, cat. $1060 (Cat No. C13-15) (Image)

Cat. $1060, Est.$700

1930 65c-$2.60, set of three, l.h., well centered, v.f., cat. $1060 (Cat No. C13-15) (Image)

Cat. $1060, Est.$400

1930 65c-$2.60, set of three side plate number blocks of six, n.h., nicely centered, without the usual gum bends or wrinkles, v.f., cat. $15200 (Cat No. C13-15) (Image)

Cat. $15200, Est.$8,500

1930 65c green, n.h., bright color, v.f., with 2019 PFC, cat. $240 (Cat No. C13) (Image)

Cat. $240, Est.$150

1930 65c green, n.h., well centered, v.f., with photocopy of a 2016 PFC for a block of four from which it originated, cat. $240 (Cat No. C13) (Image)

Cat. $240, Est.$200

1930 65c green, block of four, n.h., usual light gum bends, v.f. (catalogue value for singles) cat. $960 (Cat No. C13) (Image)

Cat. $960, Est.$500

1930 65c green, vertical pair, used on cover, with all appropriate cachets, v.f. (Cat No. C13) (Image)

Est.$200

1930 $1.30 brown, l.h., well centered, with 2019 PFC graded "XF-S 95" (SMQ $475) (Cat No. C14) (Image)

Est.$350

1930 $1.30 brown, l.h., v.f., with 2013 graded "95" PSAG certificate, cat. $475 (Cat No. C14) (Image)

Cat. $475, Est.$150

1930 $1.30 brown, n.h., nice color, tiny natural inclusion, fine, cat. $550 (Cat No. C14) (Image)

Cat. $550, Est.$250

1930 $1.30 brown, top margin block of four with plate number, n.h., v.f., with 2020 PFC, cat. $2200 (Cat No. C14) (Image)

Cat. $2200, Est.$1,500

1930 $1.30 brown, used, nicely centered, with 2018 PFC graded "VF-XF 85" (SMQ $475) (Cat No. C14) (Image)

Est.$250

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

Est.$300

1930 $1.30 brown, two plate number singles used on cover addressed to Brazil, with all appropriate cachets, small stain at top not affecting stamp, fine (Cat No. C14) (Image)

Est.$600

1930 $2.60 blue, left margin plate number single, l.h., v.f., cat. $525 (Cat No. C15) (Image)

Cat. $525, Est.$350

1930 $2.60 blue, n.h., fresh color, with 2018 PFC graded "VF 80" (SMQ $950) (Cat No. C15) (Image)

Est.$600

1930 $2.60 blue, top margin plate number single, used, well centered, with 2019 PFC graded "VF-XF 85" (SMQ $725) (Cat No. C15) (Image)

Est.$400

1931 5c violet, top margin single, n.h., perfectly centered with jumbo margins, fresh color, a true gem, with 2019 PSAG certificate graded "100J", only one known with this grade in the PSE population report (SMQ $1,450 for "100") (Cat No. C16) (Image)

Est.$750

1933 Century of Progress, 50c green, sheet of 50, n.h., some perf separations and telescoping, fresh, fine-v.f., cat. $4125 (Cat No. C18) (Image)

Cat. $4125, Est.$1,000

1933 Darius-Girenas Transatlantic flight cover franked with 3c Newburgh, tied by Brooklyn July 15 cds, also "Lituanica" and corresponding violet cachets, signed by both fliers, Kaunas July 18 arrival pmk on back, v.f. (Image)

Est.$250