How do you tell when Jacket was made?

I have a:
TYPE A-2
DRAWING NO. 30-1415
CONTRACT NO. 1978-01
UNICEPT
REG. U.S. PAT. OFF.
U.S.ARMY AIR FORCES

Is there a way from the above info to know when this was made.
Is it a reproduction or original?
What is value? Jacket is in excellent condition

Thank-you Jim Blake USA (R)