1938, red or black overprints ''Sandjak D'Alexandrette'' on air post stamps of Syria, ½p-25p, complete set of eight, most with sheet margins, full OG, NH, VF, C.v. $225, Est. $100-$120 (Image)

1924, registered cover from Yerevan to Stepanavan, franked by soldier 7k brown in horizontal pair (perf 14½x15, typo printing) and uprated by O.D.V.F. (Society of Friends of the Air Fleet) 3k orange, tied by ''28.10.24'' Yerevan ds, transit TPO ''29.10.24'' postmark and appropriate arrival hs, all on the back, F/VF and scarce item, Est. $200-$250 (Image)

1935, Airplanes over Landscapes, 5g-10s, complete set of 15, full OG, NH, VF, C.v. $150, ANK #598- 612, C.v. €240, Est. $80-$100 (Image)

Pioneer Flights. 1930 (December 5), two covers to Belgian Congo, originated from Brussels or Antwerp, franked by three or four stamps, including Airplane over Ostend 5fr brown lake, appropriate arrival makings, mostly VF, Est. $150-$180 (Image)

Zeppelin Flight. 1930 (May 24 - June 6), South America Flight cover from La Paz, franked by set of six overprints/surcharge on Aviation School issue (including 1b value) and set of Zeppelin surcharges on Lloyd Aereo issue (total C.v. stamps off cover is $690), tied by special air post marking ''14.MAYO.30'', American and Bolivian flight cachet, Friedrichshafen ''6.6.30'' arrival ds on reverse, VF and rare, Sieger #60D, C.v. €1,800++, Est. $800-$1,000 (Image)

Zeppelin Flights. 1932 (March 26-29), 1st Return SAF cover from Brazil, addressed to Colombia, franked by three values, including two air post stamps, tied by Rio ''24.III.32'' postmark, red Brazilian confirmation marking, Friedrichshafen ''29.3.32'' arrival ds, signed by a crew member of L.Z.127 H.V. Schiller, upon receiving in Colombia uprated by three adhesives in Cali, VF, Sieger #139C, C.v. €375, Est. $200-$225 (Image)

Zeppelin Flights. 1932 (May 7-10), 4th Return SAF cover from Brazil, addressed to Colombia, franked by three values, including two Zeppelin surcharges of 1932, tied by Rio ''3.V.32'' ds, black Brazilian confirmation marking, Friedrichshafen ''10.5.32'' receiver, signed by a crew member of L.Z.127 H.V. Schiller, returned to Colombia and uprated by five stamps in Barranquilla, F/VF, Sieger #158D, C.v. €245, Est. $150-$180 (Image)

Zeppelin Flight. 1933 (May 6-9), 1st SAF registered cover to Brazil, franked by nine air post values, cancelled by Sofia ''3.V.933'' ds, red Berlin-Friedrichshafen connection and blue flight cachet, Pernambuco ''9.V.33'' receiver, VF and rare, Sieger #202, C.v. €850, Est. $400-$500 (Image)

1924, Laurentide Air Service with added ''CANADA 1924'', (25c) red, two single stamps, perforated or rouletted at top, full OG, NH (rouletted) or LH, VF, Unitrade C.v. CAD $450, Est. $150-$180 (Image)

1926, Jack V. Elliot (25c ) red on yellow zigzag lines background, Elliot-Fairchild Air Service, (25c) red and (25) blue, both on yellow swastika background, all with full OG, NH, VF, Unitrade C.v. CAD$225, Est. $75-$80 (Image)

1926, Elliot-Fairchild Air Transport, Ltd., two stamps of (25c) red, one with a dot over ''o'' in ''Elliot''; and (25c) ultra, horizontal tete-beche pair, all with full OG, NH, VF, Unitrade C.v. CAD$428, Est. $120-$150 (Image)

1926-28, Patricia Airways and Exploration Co., Ltd, red surcharge (type A) 10c on (25c) green and red on yellow paper, in addition Patricia Airways Limited, (10c) green and red on yellow paper, rouletted, both with full OG, NH, VF, Unitrade C.v. $285, Est. $100-$120 (Image)

1926-27, Patricia Airways and Exploration Co, Ltd., (5c) green and red on yellow paper, three corner margin values with rouletted perforation, diagonal overprint ''RED LAKE'', two with purple overprints reading downward under different angles, last one has inverted green overprint, full OG, NH (both purple overprints, hinged on margins) or LH, VF, Unitrade C.v. CAD$425, Est. $150-$180 (Image)

1930, Commercial Airways Ltd, (10c) orange, complete pane of ten, natural straight edges at three sides, stamp on position 1 with broken oval variety, minor marginal separation, full OG, NH, VF, Unitrade C.v. CAD$250, Est. $80-$100 (Image)

MULTIPLES COLLECTION: 1928-46, 19 items, including one vertical pair (#C2) and 18 blocks of four or six (#C5), most with plate numbers, full OG, NH, VF, Unitrade C.v. CAD$1,400++, Est. $300-$400 (Image)

1931, Airplane over Packet Ship, 50c green, vertical imperforate pair, nice margins and post office fresh, full OG, NH, VF and rare, C.v. $1,100, Unitrade C.v. CAD$1,800, Est. $500-$600 (Image)

1931, Trans-Atlantic Flight Routes, $1 blue, vertical imperforate pair, nice margins and proof-like color, full OG, NH, VF and rare, C.v. $1,100, Unitrade C.v. CAD $1,500, Est. $500-$600 (Image)

SOUTH AMERICA ZEPPELIN POSTAL HISTORY ITEMS: 1930-36, 16 flown covers or cards, representing 11 items from Brazil, including four from the 1st SAF of 1930 franked by semi-official air post stamps (C.v. €800), others are mostly return flights to Europe, Argentinean card and cover from SAF of 1931 and 1932, cover with Chilean origin from SAF of 1932 and two Paraguayan mail from SAF of 1933 and 1935, the last one faulted and not counted, F/VF condition, Sieger C.v. is over €1,500, Est. $400-$500 (Image)

BALANCE OF ZEPPELIN POSTAL HISTORY COLLECTION: 1925-36, 21 covers or postcards, representing US - 6, Airship Hindenburg North America Flights; Germany - 7, Airship Hindenburg - NA and Olympic Flights; Bermuda - 1, Return ZR3 ''Los Angeles'' Flight; Canada - 1, Airship R100 Flight, as well as one of each from Estonia (incomplete cover), Great Britain, Hungary, Iceland, Russia and two from Switzerland, mostly F/VF, Est. $500-$600 (Image)

1920, Airplane over Coastline, 10c green, 10c brownish red and 10c vermilion, three vertical se-tenant pairs, the last one with ironed fold on lower stamp, no gum as issued, NH, mostly VF, Champion and Kessler guarantee hs, C.v. $510, Est. $250-$300 (Image)

1923, SCADTA ''A-U'' (Argentina - Uruguay) overprints on air post issue of 1923, set of 12, including a single of 60c with 5mm overprint, all others with overprint of 7½mm high, occasional soiling and foxing mostly on reverse, full OG, approximately a half stamps are NH, others - LH, F/VF, C.v. $1,940 as hinged, Est. $800-$900 (Image)

1929, Magdalena River, Columbus' Ship and Airplane, 5c-5p, complete set of 13, stamp of 5p with natural spot of inclusion at the bottom right, full OG, NH, VF, C.v. $197 as hinged, Est. $200-$300 (Image)

1941, Scenes and Historical Places, 5c-5p, complete set of 13, full OG, NH, VF, C.v. $80 as hinged, Est. $100-$120 (Image)

Zeppelin Flight. 1935 (May 11-14), 1st North America Airship Hindenburg Return Flight mixed franking cover from San Jose, franked by 1c deep rose and upon arrival to US uprated by two values, violet US confirmation marking and Frankfurt ''14.5.36'' receiver on the back, VF and rare, Sieger #409L, C.v. €1,200, Est. $500-$600 (Image)

Zeppelin Flight. 1933 (July 1- 4), 3rd SAF postcard to Brazil, franked by two stamps, including10k air post value, tied by boxed Prague ''30.VI.33'' ds, red connection and blue confirmation markings, Pernambuco''4.VII. 33'' arrival marking, F/VF, Sieger #219, Est. $250-$300 (Image)