This is an original World War I era United States Army branch insignia badge, featuring the classic crossed cannons design for Artillery with the number '90' affixed. This badge likely represents service with the 90th Division Artillery or a related unit during the Great War. The piece exhibits a rich, aged patina consistent with its historical period. The reverse features the original pin-back attachment. A significant piece of WWI militaria, perfect for collectors of US Army history, artillery insignia, or WWI artifacts. Please examine all images for a detailed view of the item's condition and authenticity.