If I recall these type "Service Badges or Badge of Service" as it was called during the period was only authorized to wear by the Berufsjager/Professional Hunters and Jagdaufseher/Game Wardens. And was only authorized to wear on the hat as I stated before. So yes they would have to be licensed. Also we now call it the DJ Badge, but during the period they were known as the Hunters Guard or/protection Badge. Best!