Original SPH 4 Single Visor Helicopter Helmet Size Regular

This is a original Gentex Sound Protective Helmet-4 (SPH-4) single visor dark used by Army Helicopter Pilots and Rescue Crews, the SPH-4 had a shell made of fibreglass cloth layers bonded by epoxy, dark visor is present in exellent condition with minimal scratches,include is a clear visor in exellent condition , helmet is fitted with a sling suspension liner and had a nape and chin strap ,include is a new earcup retainer assy,this size Regular helmet weighed ca. 1.54 kg (3.4 lbs), 24 inch straight cord with U-174 plug and military communications consisting of 5 ohm earphones and a microphone is present , helmet is in very good normal flight used condition,helmet is original White Painted with black painted visor cover, Head for display purpose only and not included in sale ,this helmet is normal flight used but in very good original condition ,