This is a original Nuclear Anti Flash Gold plated visor for the German Air Force Helmet HGU 2 AP/G used in the 60’s by GAF during the times of the Cold War!nuclear flash visor which should prevent the pilot from nuclear flash blindness!it was made for the german air force pilot`s of the F 104 Starfighter,the visor is brand New old stock ,available only in Size Large  !!also available used on request, always ask for availability,Visor comes in it`s original paper box,if you are really carful you can drill new holes,so you can use this one a updatet HGU-2AP with center locking,HGU 2 AP/G is not include !!!!