1918 16c green, top sheet margin plate number block of six, n.h., well centered, fresh color, v.f., with 2005 PFC, (Cat No. C2) (Image)

Est.US$1,200

1918 24c carmine rose and blue, top margin double plate number block of twelve, upper left stamp hinged, balance n.h., well centered, fresh color, v.f., (Cat No. C3) (Image)

Est.US$1,000

1918 24c carmine rose and blue, Grounded Plane variety, used, well centered, v.f. and scarce, with 2021 PSE certificate (Cat No. C3var) (Image)

Est.US$2,500

1923 16c dark blue, left sheet margin plate number block of six, n.h., fresh color, fine-v.f., with 2020 PFC, (Cat No. C5) (Image)

Est.US$850

1923 24c carmine, n.h., near perfect centering, with 2020 PSAG certificate graded "98" (SMQ $1,200) (Cat No. C6) (Image)

Est.US$650

1923 24c carmine, n.h., perfectly centered with wide, even margins, fresh color, with 2020 PSAG certificate graded "100" (SMQ $3,250) (Cat No. C6) (Image)

Est.US$1,500

1923 24c carmine, right margin plate number block of six, barest trace of a hinge at top, nice centering, rich color, v.f., (Cat No. C6) (Image)

Est.US$850

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

Est.US$500

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

Est.US$750

1930 65c green, bottom margin plate number block of six, n.h., well centered, few natural gum skips, fine-v.f., (Cat No. C13) (Image)

Est.US$1,500

1930 65c green, used, near perfect centering, with 2021 PSAG certificate graded "98" (SMQ $1,100) (Cat No. C13) (Image)

Est.US$650

1930 $1.30 brown, n.h., near perfect centering, fresh color, with 2020 PSAG certificate graded "98" (SMQ $3,500) (Cat No. C14) (Image)

Est.US$1,800

1930 $1.30 brown, bottom margin plate number block of six, l.h., well centered, v.f., (Cat No. C14) (Image)

Est.US$2,500

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

Est.US$300

1930 $2.60 blue, n.h., well centered, bright color, with 2021 PFC graded "VF-XF 85" (SMQ $1,050) (Cat No. C15) (Image)

Est.US$750

1930 $2.60 blue, used, well centered, with 2021 PSAG certificate graded "95" (SMQ $1,250) (Cat No. C15) (Image)

Est.US$700

1933 50c green, top margin plate number block of six, n.h., well centered, some gum skips, v.f., (Cat No. C18) (Image)

Est.US$300

1937 50c carmine, top margin plate number block of six with "Wide Full Selvage" (18mm) n.h., with 2020 PSAG certificate graded "90" (catalogue value for ungraded Plate Block) (Cat No. C22) (Image)

Est.US$2,000

1932 (16 June) 2c stationery entire envelope additionally franked with 1c, 2c, 3c and 15c (Air Post), paying 23c from Buffalo to Soviet Union, addressed to Magnitogorsk, with Berlin (26.6), Moscow (27.7) and Magnitogorsk (8.7) arrival postmarks on back (Magnitogorsk is an industrial city in Chelyabinsk Oblast, located on the eastern side of the extreme southern extent of the Ural Mountains by the Ural River. The city was founded in 1929, so this cover is rather early usage) (Image)

Est.US$250

1933 (15 July) attempted Ocean Flight, New York to Lithuania by Capt. Stefan Darius and Stanley Girenas, flight cover from New York to Kaunas, Lithuania, July 15, 1933 "Lituanica" cancel, franked with 3c violet, v.f., with six line cachet, signed by both pilots. Both flyers died when their plane was wrecked at Soldin, Germany, about 400 miles short of their goal. Mail was delivered to Kaunas on July 18, 1933, with arrival pmk (Cat No. AAMC TO 1182) (Image)

Est.US$300