India, FAILED ATTEMPT to sent Registered air mail cover from Calcutta on 29/2/1948 to Beirut via Pan American Airways via DAMASCUS due to the disturbances in Palestine. Cover returned to the sender after four months on 18/6/1948. Franked 14 Annas using block of four 3½As Independence stamp (SG n 302). RARE HISTORICAL INDIAN COVER INVOLVED IN THE FIRST ISRAEL-PALESTINE WAR.