Wartime incoming civilian mail: 27 JUNE 1940 airmail cover from BELGRADE to HAIFA franked 10 Dinars; backstamped 28 VI 40 machine transit postmark at local airport (ZEMUN) & 30/06 ISTANBUL transit; opened & passed Palestine Censor + 8 JY 40 HADAR HACARMEL (Haifa) arrival (GD-98). Route: as Italy entered the War on 10 June, Ala-Italia airlines unavailable; as no German censor-mark, not taken by DLH (Deutsche Lufthansa); probably carried by local Aeroput airline to Istanbul via Zagreb; from there via Imperial Airlines. Sent/received during a scarce airmail period, just as western Europe was conquered & airmail routes changed, mostly to sea-based routes.