American WW2 - Insignia - US EM and Officer Collar Discs - Epic Militaria
/US Army Collar Disk U.S.title,domed type,post ww2 | eBay
US Army Branch of Service, Air Defense Artillery Collar Disc Gold
File:WW2 Japanese Army Uniforms Rank insignia Collar patches ornaments Poster chart 1944 US Government National Archives NARA Unrestricted Public domain 44-pa-1139 cropped.jpg - Wikimedia Commons
U.S. ARMY INFANTRY COLLAR DEVICES
U.S. Army Enlisted Collar Discs
US Army Branch of Service, Air Defense Artillery Collar Disc Gold