Vintage WWII US ARMY M4 SHERMAN M70 D TANK SIGHT TELESCOPE 1943 WW2.The M50 sights were replaced with the M70 Series sights, the same size, and magnification. What set them apart was there superior optical quality. The Army went on to develop many different versions of this sight. It was a 3X scope with a 12 degree 19-minute FOV. COMES IN A BEAUTIFUL PINE BOX!