1937, Imperial Airways: Palestine, 2 x 5 M and 15 M definitives, mixed franking on airmail cover from Tel-Aviv, carried by flying boat COURTIER addressed to Berlin. The plane crashed into the sea in Phaleron Bay near Athens Greece at Oct.1 1937, recovered mail with destination Germany was marked with a label ”Amtlich verschlossen” and a two-line handstamp ”Aus verunglücktem Flugzeug durchnässt geborgen.” Scarce cover!