A nice example of early NSRKB visor insignia here. Some minor paint loss is present to the center of this badge and is visible in photos. Good condition with both prongs present on the reverse. 
 
The Nationalsozialistisches Reichskriegerbund (NSRKB) was formed 4 March 1938. It became the only authorized war veterans' organization and was regarded as the successor of the Deutscher Reichskriegerbund Kyffhäuser (DRKB).