During W.W. II, US Army tanks carried panoramic periscopes, so they could maneuver securely, without exposing the driver in battle. -- Packed in its original issue carton, each prism is housed in an army brown metal frame. Glass prism measures 54mm x 38mm x 146mm, Pkg. weight 2 lbs. Original value to U.S. Government was $50.00 each in 1944

$14.95

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set mineral specimen

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