1925 (March 26-27), cover from Kerdaha to Deir ez-Zur via Aleppo, violet handstamp ''Poste Par Avion'', franked by four stamps with ''Avion'' overprints over Alaouites surcharges, transit and arrival ds on reverse, slight vertical folds, still F/VF, Est. $250- $300 (Image)

1929 (July 2-3), Pioneer Flight Beirut - Athens, registered cover from Latakia to Athens, franked by 7 values (3 - on reverse) with Alaouites overprints or surcharges on Syrian stamps, including 4 with additional black or red Airplane overprint, Athens ''3.7.29'' arrival and all appropriate markings, F/VF, Est. $150-$200 (Image)

1931 (August 29-30), Pioneer Flight Beirut - Naples, pre- printed cover from Tartus to Braunschweig, franked by two Alaouites air post stamps and uprated by 6 values with ''Lattaquie'' overprints on Syrian stamps, Beirut transit and arrival ds on reverse, mostly VF, Est. $100-$150 (Image)

1931 (November 13), Pioneer Flight Beirut - Berlin, pre- printed cover from Tartus to Braunschweig, franked by 6 values with ''Lattaquie'' overprints, including 5 air post stamps, Beirut transit on reverse, mostly VF, Est. $100-$150 (Image)