A very nice looking WWII US Combat Infantryman Badge here. One prong on the reverse has been lost to time, as is clearly shown in photos. Sterling marked on the pinback and the badge itself. Displays well. 
 
The Combat Infantryman Badge (CIB) is a United States Army military decoration. The badge is awarded to infantrymen and Special Forces soldiers in the rank of colonel and below, who fought in active ground combat while assigned as members of either an Infantry or Special Forces unit of brigade size or smaller at any time after 6 December 1941