Original Headset Cord for P-4 , MB-4 or P-4 A Helmets

Original Headset Cord with U-93A/U jack plug (H-75A/AIC and H-75B/AIC headsets) on black pigtail communications cord., for use with P-4, MB-4 and P-4A Helmets , Set is new and unused witout the paper cover,very rare and hard to find, Date 1960 ,