Original U.S. Vietnam War US Navy Pilot Dual Visor APH-6CMSI Flight Helmet by Sierra Engineering Co. with Original Early “Bowling Ball” Bag MG 42 43 fuze can be fitted

43 fuze can be fitted to the Teller mine 35

The factory in charge for the pilot production starting in December 1942 was the Sestroretsk Tool Factory

There are three rows of 10 blue stars with an additional star in between the last two rows

The top of the cap exhibiting scattered signs of mothing

Original U.S. Vietnam War US Navy Pilot Dual Visor APH-6CMSI Flight Helmet by Sierra Engineering Co. with Original Early “Bowling Ball” Bag MG 42 43 fuze can be fittedOriginal Item: Only One Available. At the end of the 50's the APH series helmets introduced a new generation of flight helmets characterized by the external visor covered with a protective shield. Improvement of the communication system, internal liner and oxygen mask retainers was also made and in some versions the dual dark and transparent visors system was installed. These types of helmets were the US Navy and USMC standard jet aircraft headgears