Latest purchase. Original Aero Size 46 Contract 18775P from May , 1942. Aero's last contract. 50,000 jackets made. Probably cow. Very sturdy, terrific replacement job on quality Talon repro zipper and excellent knits. This jacket does look familiar.....anyone here once own it? Wonderful roomy size 46. Will post fits pics soon: Oh, NOT for sale. With my luck, its an old Good Wear! Plenty of very old oxidation on the hardware though if its NOT an original. A very sometime wearer to alternate with my other original Aero sometime wearer. Like once a month for each one!