TYPE B-3 DWG44H2486 CONTRACT 1986A AC-18606 SCHOTT BROS. INC NEW YORK, NEW YORK U.S.A.F.F.
the little label on the inside says
This is the 257S style jacket which we have made since 1986 in our line. Based on the lot number the jacket was produced in the late 1980's-early 1990's. Gail