Chadian postal boycott of Israel: 29-8-1980 a/m comm cv ex J'LEM to MOUSSORO Chad, franked 27.15L during new "Old Shekel" curr. per. (starting 22 Feb 1980 - here worth 2.715 IS) & tied by 2 strikes of TLV-27 pmk; Chad under Libyan attack/occupation since 22 March (3rd such in Chadian-Libyan conflict/civil war, 1978-87), capital captured 16 Dec.; as suspended relations w/Isr. already Sept. 1972 (under Libyan influence), this corresp. odd (locale home to 2nd presidential residence): here received & stamped 2x "relations suspended | return to sender" using Fr.-lang h/s K-Type-I & RTS. Only known example of Chadian postal boycott, rare as from war/occupation period + Isr. currency change/inflationary postage rate.