1987, 25th Anniversary of the Antarctic Treaty, 20c and 30c, complete set of two and imperforate (!) souvenir sheet used on large size FDC with special ''7 Marzo 1987'' cancellation, minor facial scratches, VF and rare, G. A. Jalil certificate, C.v. $500 for unused sheet, Est. $300-$400 (Image)

Zeppelin Flight. 1931 (October 24-28), 3rd SA Return Flight Paraguayan stationery postcard 70c red, uprated by 3 Paraguay definitives and 2 Argentinean stamps, appropriate cancellations, machine confirmation of Buenos Aires with ''CONDOR - ZEPPELIN'' line marking, Friedrichshafen ''28.10.31'' arrival ds, mostly VF and scarce mixed franking item, Sieger #135a, Est. $100-$150 (Image)

1920, black 2nd Monogram surcharge 5r on imperforated 5k claret, used on postcard from Alexandropol to Moscow, arrival markings are alongside, mostly VF, Est. $500-$600 (Image)

PRESENTATION BOOKLET FOR PARIS ISSUE: 1920, 18-page booklet, 1r-100r, containing 89 neatly mounted essays of all values in singles, pairs, strips and blocks, complete designs, frames only or central vignettes only and 5 horizontal pairs overprinted ''Specimen'' on Eagle designs (1r-10r), some booklet wearing, stamps with full OG or no gum as produced, VF and extremely rare in complete booklet, Est. $1,200-$1,500 (Image)

1921, First Constantinople issue, 1r gray green, horizontal strip of three imperforated between 2nd and 3rd stamps, full OG, NH, VF, Est. $200-$250 (Image)

1921, First Constantinople issue, 5r dark brown, top sheet margin vertical pair imperforated between stamps, full OG, NH, VF, Est. $200-$250 (Image)

1922, black surcharges on Soviet issue, 50,000/1,000r, 100,000/2,000r and 200,000/4000r used on reverse of cover from Alexandropol to Baku (Cherny Gorod), arrival ds, F/VF and rare, Est. $500-$600 (Image)

1922, black surcharge (type III, elongated figure) 1(k) on 1st Constantinople imperforated stamp of 1r gray green, bottom margin block of four, no gum as produced (probably proof), NH, VF and very rare multiple, Artar #716, C.v. $680++, Est. $400-$500 (Image)

1923 (May 4), cover from Yerevan to Karaklis, franked on reverse by 35K (violet ''K'' added to ''35'') on 20,000r lake in vertical imperforate pair (fold between stamps), tied by Yerevan ds, arrival marking of May 6, some folds do not affect stamps, F/VF and rare, Est. $700-$800 (Image)

1922, double surcharge (thin figure) 2(k) on 500r brown violet, postal cancellation, F/VF and very rare, ex-Z. Umikov, Est. $350-$400 (Image)

1922, black surcharge 5(k) on soldier imperforated 50r red, used on entire letter from Alexandropol to Yerevan (Minutes of Employees' Meeting of the Post Office), appropriate markings, minor wears, still F/VF and rare, Est. $500-$600 (Image)

Non-Postal Stamps and Documents. 1927-28, ARF (Armenian Revolutionary Federation in US) membership card, dark blue text on rose and lilac cover, bearing 12 black on red paper membership dues inside, some folds on front cover, still F/VF and scarce, Est. $150-$200 (Image)

Non-Postal Stamps and Documents. 1935-38, ARF (Armenian Revolutionary Federation in US) membership card, dark blue text on creamy cover, bearing 33 membership dues inside (9 for 1935, and 12 each for 1937 and 1938), slight fold on front cover, still F/VF, Est. $150-$200 (Image)

1925-30, Pilot, Crane and Airplane, 2g-10s, complete set of 20, full OG, NH, mostly VF, C.v. $325, ANK #468-87, €450 (Image)

1935, Airplanes over Landscapes, 5g-10s, complete set of 15, full OG, NH, VF, C.v. $150, ANK #598-612, €240 (Image)

1951, Women Regional Costumes, Lower Austria, perforated proof of 3.50s in dark green (issued color), perforation L14½-15 instead of comb 14¼ x 13½, nicely centered, full OG, NH, VF, ANK #919P, €575, Est. $200-$240 (Image)

Military Stamps. COLLECTION ON HINGELESS PAGES: 1915-19, black overprints ''K.U.K. FELDPOST'' on stamps of Bosnia, Emperor Franz Josef issue, two sets of Emperor Karl I (missing No.M77), semi-postal and newspaper stamps, all with full OG, some NH, mainly LH, F/VF, C.v. is over $600, Est. $300-$400 (Image)

Prisoner's of War Unissued Designs by L. Hesshaime. 1918, 6 die proofs of various designs in different colors, 2k-50k, housed in buff cover booklet with black text, each proof and cover signed by the artist at bottom, fresh, VF and rare, Est. $250-$300 (Image)

ACCUMULATION OF FISCAL AND VARIOUS NON-POSTAL STAMPS: 1917-41, 395 unused and used revenue stamps, representing 242 from Estonia, 141 from Latvia, 10 from Lithuania and 2 from Poland, occasional flaws possible, generally nice unit, F/VF, Est. $250-$300 (Image)

1932, Piccard's Balloon, large die proof in black with no value indicated, artist's sign at bottom, size 83x107mm, no gum as produced, VF, Est. $150-$200 (Image)

Zeppelin Flight. 1925 (April 24-25), Airship (Z.R.3) Los Angeles Flight cover from Hamilton to Lakehurst, franked by Caravel 2½p apple green, machine ''16.APR.25'' cancel or ''17.APR.25'' date stamp, 2- or 3-line Bermuda confirmation markings, postmarked on arrival, mostly VF, Sieger #20Q, Est. $150-$200 (Image)

1930, Graf Zeppelin surcharge and overprints on Aviation School stamps, 5c/10c, 10c-1b, set of six values, full OG, NH (3) or LH/hinged, mostly VF, C.v. $450, Est. $250-$300 (Image)

NEAT AIR POST GROUP: 1923-30, ''Bo'' overprints on Colombia SCADTA stamps of 5c-1p and registration stamp, plus Zeppelin set of 5 common values, full/large part of OG, F/VF, C.v. $278 (Image)

1912, Tsar Ferdinand, 5s pale green, color variety, full OG, NH, VF, expert's sign on reverse, C.v. $975 as hinged, Est. $300-$400 (Image)

1899, Poseidon's Trident with Stars at Sides, 1g violet, horizontal pair imperforated between stamps, in addition left stamp has a dot in ''_S'' variety and both stamps have no control marking, full OG, NH, VF and very scarce, C.v. $250 as hinged, Est. $250-$300 (Image)