Hello everybody! Is there anyway to tell an early MIL-J-7823 AER from a later one? I know the specification started in 1951 and ended in 1961. The particular one I'm looking at is made by J.A. Dubow with the contract number being N383S-47654. Im hoping its an early one as those could have seen service in Korea. Attached are images of the tag and the front of the jacket.