1924, Flight ISTANBUL-ANGORA, envelope showing crescent and star issue 9 kurus rate and scarce red crescent 5 para, all tied by POSTES AERINNES STAMBOUL - 16.9.24 cds., flewn next day and on reverse POSTES AERINNES ANGORA 17.9.24 cds. arrival mark, vertical fold, otherwise fine, attractive and very scarce.
