WW2 B-1 Cap. "Theatre" Made

Original USAF theatre made B-1 cap, cap is in very good condition, the main body is excellent, no rips or tears, and fitted with snaps either side, for the use of an oxygen mask, and a 20th air force shoulder title has been added, the large bill shows signs of usage, with the composite plastic?,stiffener broken on the front edge corner, but still displays well, and a couple of small holes to the front edge.
The sweat band appears to be rayon, and does have a number 74 faded in red ink, possibly a stock number? from the ww2 air force museum in Pennsylvania where this cap came from. And the former owner was based at Tinian Air Base, in the Marianas, and was a B-29 Navigator.
A letter of provenance does come with the cap.

postage is included in the sale for U.K. only

HEAD IS NOT INCLUDED IN THE SALE
s/n 70

Code: 50082