1947-1961, Group of 10 Airmail deluxe proofs incl. 1947 3f (2, black and red-brown), 10f (black-brown), 1949 25f (3, in black, green & brown), 100f (black), 1955 100f (blue without inscriptions) and 1960-61 10f (black), most signed by engraver (Image)

1914 “Rallye Aérien,” special red label for the event in IMPERF PAIR, only 150 were released thus (per Sanabria), slight crease at foot else very fine and a Monaco rarity (Image)

1914 (April) Rally Aérien, six matching ppcs with red special labels tied by “Rallye Aérien” double-circle cancels of Bruxelles, Gotha, London, Madrid, Paris and Vienna, each with Rallye Aérien / Monaco receiver, three with Monaco 5c tied on back (13-15 April), the Vienna flight never took place and the Gotha flight made it only to Avignon, fine and scarce assembly (Mü. 1-6, 6’500pts) (Image)

1932 (Oct.) Zeppelin 8th South America Flight, attractive cover with 10.05Fr total franking incl. block of four 2Fr all tied by 2.10.32 cds, F’hafen transit dated 10.10.32 (deliberately mis-dated), flown to Recife and then by Condor aircraft to Buenos Aires (bs Oct. 15), a wonderful showpiece, very fine (Sieger 189, € 500+) (Image)

1933 (June) Zeppelin 2nd South America Flight, reg’d ppc with 10.85Fr total franking tied by Monaco-Ville cds (29 – 5 / 33) and sent via Marseille (bs) and F’hafen (3.6.33 transit) with 6.VI.33 Pernambuco bs, very fine and rather scarce (Sieger 214, € 450) (Image)

1933 1.50Fr Surcharge, IMPERF pane of 25 with full og and nh, very fine (Yv. 11’875+) (Image)

1946 100Fr Prince Louis II, DOUBLE OVERPRINT, one from the single sheetlet of 10 known, very lh, a superb example of this rarity, signed Kessler and Calves with the latter’s 2002 cert (Yv. € 23’000) (Image)

1947 USA Stamp Centenary set of 7 as one collective die proof, trivial marginal faults else very fine and scarce (Yv. € 575) (Image)

1955 Sea birds set of four proofs in single colours, mint nh with “Musée de Timbre Poste” hs on reverse, very fine (Image)