A paperback copy of a US Department of the Army 1971 "Night Vision Sight Individual Served Weapon AN/PVS-1"in good to very good condition overall. The AN/PVS-1 was a foundational Generation 1 (Gen 1) passive starlight scope widely deployed during the Vietnam War. Unlike earlier active infrared systems (such as the M3 Sniperscope used in the Korean War) which required a heavy, visible-to-enemy infrared searchlight emitter, the AN/PVS-1 operated entirely passively. It amplified ambient environmental light—such as starlight and moonlight—making the user invisible to opposing forces lacking similar equipment. Bidders are welcome to preview items in person during our normal operating hours Tuesday through Saturday 11am-6pm. Estimated shipping parcel size (LxWxH) 14 inches x 12 inches x 4 inches. Please note, shipping estimates are provided for LiveShipping calculations only and may vary based on weight and location. The auction house will combine multiple lots to reduce shipping cost. Please inform the auction house prior to paying your invoice for special shipping requests. Our primary method of shipping is via UPS Ground.