1930 Express cover addressed to Zeppelin Co. chief Dr. Hugo Eckener at F’hafen (15.5.30 bs) and retained by him, sold at the 2003 auction of his philatelic estate (with certificate signed by the auctioneer and his daughter Uwe), slight perf toning else very fine (Image)

1931 (30 Jan.) Do-X first trans-Atlantic flight cover, 6 diff. stamps incl 1 1/2G airmail all tied by 28.X.20 (error year date) cds to long cover with three diff. cachets, “on boards” cds (30 Jan. 31) plus F’hafen transit (12.11.30), bs Rio 22.VI.31, attractive, very fine (Image)

1931 (May 3) Zeppelin Pomerania Flight, only 109 items carried, printed flight-related pc with franking tied on April 7, F’hafen departure and Stettin arrival (both May 3), prepared and addressed to India aerophilately pioneer Steven H. Smith in CALCUTTA (Park Street cds of 25 May), most unusual, autographed by Smith on reverse on day of receipt, very fine (Sieger 106, € 200++) (Image)

1931 (July 25-31) Zeppelin Polar Flight, postcard with 62 1/2c franking flown via F’hafen (24.7.31 cds) to Leningrad with pictorial receiver (25.VII.31), unusual, very fine (Sieger 119, 245 flown, € 350) (Image)

1932 Graf Zeppelin Netherlands Flight ppc, one of only 100 items flown from Enschede to Rotterdam, franking incl. 36c Airmail tied at Enschede (17.VI), with Rotterdam bs (18.VI) and blue flight cachet all on obverse, very fine (Sieger 165Aa) (Image)

1932 Graf Zeppelin 6th South America Flight despatch via Berlin, sent from the “Indische Tentoonstellung” exhibition at Gravenhage with 1.125 Gulden total franking tied there, Anschlussflug and green flight cachets, final bs of Asuncion, Paraguay of 21 September. Very attractive and scarce despatch to a rare destination (Sieger 177B) (Image)

1932 Zeppelin 6th South America Flight cover with franking incl. 1 1/2G airmail all tied at Rotterdam, sent to Rio (bs 16 Sept.) via F’hafen (12 Sept. cds), bold green flight cachet, fine (Sieger 177) (Image)

1936 Hindenburg 1st North America flight, attractive cover with three stamps tied by gear-shaped 5 MEI 36 “Nederlandsch Fabrikaat / Amsterdam” ds, italic s/l cachet plus Frankfurt “d” flight cachet, bs New York (May 9), signed, very fine (Sieger 406) (Image)

1930-36, Graf Zeppelin & Hindenburg Flights, exceptional group of 12 covers or cards, some only 200 or fewer flown, nice frankings and sharp cachets, many showpieces, very fine overall (Sieger 57M, 99A, 104, 116, 133, 157, 214C, 238E, 406, 410, 439441; € 1’650+) (Est. € 600/800) (12) (Image)

1920 (27 April) Weltevreden to Telokbetong flight cover with two superb strikes of the special cancel (dated the day before), bs 28.4.20, rare with only 91 flown, light tropic spots else very fine (Mü. 2, 10’000pts) (Image)

1931 (Dec 6) Crash of KLM mail plane “Ooievaar” at Bangkok en route to Holland, cover (partly oil-soaked) from Bandoeng to Den Haag with special hs in Dutch: “Beschadigd door vliegramp “Ooievaar” on reverse, one (of two) stamps washed off, fine and very scarce as only part of the mail received any markings (Nierinck 311206a) (Image)

1936 (August) Zeppelin Hindenburg 7th North America Flight, cover flown from Soerabaya (strip of 3 triangular airs tied August 7) and sent via Bandung and K.L.M. to Amsterdam, reverse with August 13 Halle/Leipzig pictorial cds and final bs of Soerabaja (Sept. 28); Zeppelin cachet in lilac, cover torn and neatly mended, fine and exceptionally rare (Sieger 430, € 400) (Image)

1936 (Sept.) Zeppelin Hindenburg 8th North America Flight, reg’d cover with 1.10G total franking tied by uncommon Probolinggo cds (Sept. 3) and special registration form (on back) and sent via KLM to Amsterdam, with Halle/Leipzig transit (Sept. 14), Rhein-Main departure cds (Sept. 17) bs New York (Sept. 20 oval), sent back to Malang (Neth. Indies) via Seattle (Sept. 24) and arrived October 27! Fine and attractive showpiece (Sieger 437, € 400+) (Image)

1931 Do-X Flying Boat set, lh, very fresh, fine, double-signed Silombra (Image)

1931 Do-X Flying Boat overprint set of 7 tied by special pictorial cds (18.8.31) to cacheted cover flown to Curaçao, bs (25.8.31), very fine (Image)

1931 (May) DO-X Flight, Surinam to Curacao, two 10c special ovpts + 1c defin. tied by First Day (Aug. 18) pictorial cds, special cachet, bs Aug. 25 at Curacao, very fine (Mü. 41, 3’000pts) (Image)