This single coil stamp from the United States is a rare find for collectors of historical event stamps. The 1 cent denomination and green color make it a unique addition to any collection. The stamp's original gum and grade of F/VF (Fine/Very Fine) ensure its quality and authenticity. The year of issue between 1911-1920 adds to its significance, and its certification as uncertified further proves its value. This U.S. Sc.# 441 stamp is unused and has never been hinged, making it a must-have for any serious collector. Add this gem to your collection today.