Original U.S. Vietnam War HGU-26/P Flight Helmet with Double Visor, Oxygen Mask and 1965 Dated Flight Suit

Original Item: One-of-a-kind.  The HGU-26/P request for nomenclature is dated Jan 14, 1970 and is based on the HGU-22/P Helmet Shell. There is no military specification detailing exactly what goes into an HGU-26/P but until the appearance of the single visor HGU-26/P both USAF and manufacturer information was consistent in describing the HGU-26/P as an HGU-22/P helmet shell with a PRU-36/P side-actuated double visor. Sierra Corp and Gentex Inc sold single and dual visor HGU-26/P helmets. The HGU-2/P, HGU-2A/P and HGU-26/P helmets have been modified and upgraded to meet every user's whims over the years. The most common modifications are custom fit liners instead of the standard fitting pads and the single visor cover gull wing cut to improve the pilot's upward visibility. Both these features are included in the helmet prepared by Protection Inc. for the USAF Thunderbirds display team. The customers would then install comfort liners, oxygen mask retention receivers and communications to