A genuine U.S. P-4B flight helmet as used by the Air Force, Navy & Marines. The PB-4 started being issued in the late 50's and was used through the 60's during the Vietnam War. This helmet features rare military green paintwork as typically used by helicopter pilots in the field. It comes with its original tinted visor with fully working quick release mechanism allowing the visor to be retracted or moved forward. A rare find in military green finish.