1947, 3¢ Edison. Tied by "Milan Ohio Feb. 11, 1947" cancel on Dorothy Knapp cacheted First Day cover, beautiful multicolor design with Edison's portrait inside a light bulb, Very Fine and choice, a stunning and rare cover postmarked on the first day of issue in the town of Edison's birth. Scott No. 945  Estimate $750 - 1,000. $0 (Image)