1950 1st airmail / PO's, rates & routes: 31-12-1950 ex Jewish Agency for Palestine stationary used as airmail cover from JERUSALEM to LONDON franked 40pr at the FA-2a period rate to Europe using mix of full tabbed 30pr (Ba33) + 5pr 1949 2nd Coinage tete-beche gutter pair (Ba22a) tied by 2 strikes of JERUSALEM-16 postmark; slit open at top, peripheral tear. Scarce franking combination on proper commercial cover. Estimated value $100+