1918-23 6c-24c complete, n.h., each stamp well centered, fresh and v.f. (Cat No. C1-6) (Image)

Est.US$500

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

Cat. $1350, Est.US$400

1923 24c carmine, tied by Washington, DC First Day Cancel on Worden cover, v.f., cat. $750 (Cat No. C6) (Image)

Cat. $750, Est.US$150

1930 Zeppelin, 65c-$2.60, set of three, n.h., well centered, v.f., cat. $1675 (Cat No. C13-15) (Image)

Cat. $1675, Est.US$700

1930 Zeppelin Issue, 65c-$2.60 set of three, used, neatly postmarked and well centered, v.f. (Cat No. C13-15) (Image)

Est.US$500

1930 Zeppelin 65c-$2.60 used on two covers and card, fresh, mostly v.f. (Cat No. C13-15) (Image)

Est.US$500

1930 65c green, one n.h. (short perf.) and two l.h. including one with plate number (slight gum toning), also two $1.30 brown stamps, h.r., fine-v.f., cat. $1310 (Cat No. C13-14) (Image)

Cat. $1310, Est.US$350

1930 65c green, n.h., well centered, with 2012 PFC graded "XF 90" (SMQ $475) (Cat No. C13) (Image)

Est.US$250

1930 65c green, n.h., well centered with wide margins, with 2012 PFC graded "XF-S 95" (SMQ $600) (Cat No. C13) (Image)

Est.US$300

1930 $1.30 brown, n.h., with 2012 PFC graded "F-VF 75" (SMQ $450) (Cat No. C14) (Image)

Est.US$200

1930 $2.60 blue, right margin single, n.h., well centered, fresh color, with 2012 PFC graded "XF 90" (SMQ $1,250) (Cat No. C15) (Image)

Est.US$600

1933 50c green, n.h., well centered with wide margins, with 2012 PFC graded "XF 90 XQ" (SMQ $160 for "90J"), plus a hinged single, also with 2012 PFC (Cat No. C18) (Image)

Est.US$100

1933 50c green, top margin plate number block of six, n.h., v.f., cat. $600 (Cat No. C18) (Image)

Cat. $600, Est.US$150

1933 50c green, bottom sheet margin block of four with Plate Number, n.h., v.f., cat. $300 (Cat No. C18) (Image)

Cat. $300, Est.US$100

1933 50c green, FDC (Oct.5, Washington, D.C.), also Chicago, Oct. 7, plus Miami, Fla Oct.23 cacheted Zeppelin flight, fine-v.f., cat. $605 (Cat No. C18) (Image)

Cat. $605, Est.US$150

1931 Wiley Post & Harold Gatty Record Circumnavigation flight, June 21 cover with 2c canceled at Mineola, N.Y, Berlin cds (June 24) and Russian cachets, one dated June 29 by hand, signed by both fliers, all markings on front, v.f. This circumnavigation via Newfoundland, Greenland, Russia and Alaska completed in 8 days 16 hours in the "Winnie Mae" airplane (Image)

Est.US$250