Pakistan: PoW Aerogramme Returned "No Unpaid Service"

This aerogramme form was handstamped “Prisoners of War / Free Mail” to indicate postage free service in communication to prisoners of war.

Postmarked LAHORE 22 AUG 72, the aerogramme was rejected “No Unpaid Service / Returned to Sender”. Arrival cancel R.L.O. Lahore 2 Sep 72, on reverse.