September 14, 1943 First Day Cover franked with Scott #914, the 5¢ WWII Overrun Countries — Belgium commemorative, tied by a crisp Washington, D.C. machine CDS with bold 'FIRST DAY OF ISSUE' slogan cancel, featuring a striking full-color Minkus illustrated patriotic cachet depicting an American industrial cityscape of factory smokestacks, church steeple, and skyscraper under the legend 'THE RAMPARTS WE WATCH,' with copyright 1943 Jacques Minkus, New York imprint on the reverse, addressed in manuscript to San Pedro, California — with characteristic diagonal adhesive toning stripes on the reverse and light age toning consistent with 83 years of storage. Please review the scans for condition.