Description
Philadelphia, PA Airmail Society Convention First-Day Envelope, 1950 6c. First Day Cover, 6c. First Day of Issue stamped envelope for the 6c United States airmail, cancelled at Philadelphia, PA on Sep 22, 1950 (9 AM). Cancellation handstamp reads FIRST DAY OF ISSUE AMERICAN AIR MAIL SOCIETY CONVENTION STATION. No publisher or series imprint visible; small pencil notations present on the front. Back is blank airmail-style envelope flap (no message or address) Notes for Cover Collectors: • High-resolution scans of front and back are provided; use zoom to inspect postmarks, cachet details, and backstamps. • No third-party grading; condition is shown in the images.