Greetings, this is my first post. I have a jacket here that is a bit odd. This is a L-2b but has been pointed out that it does not have the oxygen reinforcement tab., and it was never installed. The sage green liner is correct, the outer shell may be an odd color, in is not the silver / green one would expect. Other than that the jacket looks like the others of that time frame, late 1950's. , Made by the Rolen Sportswear co., it is contract number AF-36-(600)-6471 Has anybody else seen examples like this? Or Thoughts?