Illustrated cachet cover for the July 8, 1946 U.S. Air Mail Los Angeles Area Experimental Helicopter Service (operated by Army Air Forces), bearing an 8¢ olive-green Airmail stamp tied by a Los Angeles, CA Jul 8, 1946 machine cancel, with a matching Long Beach, CA arrival backstamp on reverse; light age toning on reverse consistent with age. Please review the scans for condition.