US AIR CORPS 1940's Student Flyer's Goggles.& Metal case

Description

Obtained from a surplus shop in 1972  outside Kelly AFB TEXAS. was told they are US Made.  only letters or Numbers are stamped on lens (both sides )  "Inflammable" Amber color lens. the set was in very good shape due to being 80 years old. eye piece rubber is still soft.  I believe they may be Issued as a Back-up in case An-6530 model is expensive gets broken or blown off in a OPEN Cockpit. Metal case is OD paint goggle strap is same as used on WW2 Dust Goggles. Nose piece is adjustable for each flyer face size.