United States. An M65 Field Artillery Periscope certificate_of_authenticity Footnote: Max Immelmann (born September

Footnote: Max Immelmann (born September 21

measures 9 cm (w) x 13

hallmarked and marked "900" silver on the reverse

(Reichspost Adlerabzeichen)

United States. An M65 Field Artillery Periscope certificate_of_authenticity Footnote: Max Immelmann (born SeptemberThis is a rare and very well preserved M65 field artillery periscope, constructed of an olive drab painted magnetic metal casing. It consists of two periscope style lenses affixed to dual tubes, in turn connecting to glass eyepieces. The optics remain fully functional and are adjustable in four variations, which includes a range finding grid. The lenses also retain a functional zoom feature adjustable to a factor of four. The base retains all