Im trying to find some information to validate the actual military use of this particular model of the
AFH-1 family of headgear.
I have owned numerous copies of the AFH-1 over the years and all of which follow the same
basic shell contour design as their HGU/APH counterparts throughout the size range.. The 1970 Sierra Engineering size small differs from the rest in that the earcup area of the shell has a distinctly different shape than that of the earlier size small from (for example) General Tire and Rubber, which I have owned in the past. The General Tire helmet looked almost identical in shape to the standard APH/HGU
size medium shell. Here is my question.
Since the SPH-4 series was well into production by 1970, could it then be assumed that the Army stopped taking orders of the Ballistic AFH-1, and if so the Sierra helmet never actually made it to the flight line during the war (question explained) which also explains why many examples of this helmet are available for sale on line "brand new in the box".
I have personally never seen a photo of a pilot or crew wearing a helmet that looked like the 1970 design version of the size small AFH-1.
Any one out there old enough to provide some feedback on this issue.?
pics show the data tag and a side view of the shell earcup area.