Very famous luftwaffe reflexive gunsight. Used on a variety of German fighters like - Bf109B-2, Hs129A-0/B-2, Fw190 A-0/A-1/A-2/B-2, Bf110 C, He100. This Gunside is in crisp condition with original box, you cam see it in photos. This is the piece of history that every serious collector need to have!