http://www.ebay.com/itm/281204190634
This vintage A-2 leather flight jacket was made during the 1940s. It has a spring-loaded zipper introduced in 1943 by Crown. This type, with “two-way” teeth, was designed exclusively for the military with larger versions finding their way onto the turrets of bombers to keep the wind out. Featuring this late-war military zipper, the jacket may have been private purchase. Snaps are of a ball style, and were made by Rau of Providence, Rhode Island, and have exposed backs. Pockets have nicely scalloped flaps, with the size tag stitched on the inside. The collar is long and pointed, and is attached directly to the body of the jacket The leather jacket hanger is off-center, stitched with “X” style stitching. The jacket has a khaki liner, which is in very good shape. Unfortunately, the original tag is long since missing.

Chest (pit to pit): 21″
Shoulder to shoulder: 17″
Sleeve (shoulder to end of knit cuff): 24-1/2″
Length (base of collar to end of knit cuff): 23″

Also see: https://vintagehaberdashers.com/2013/03/08/original-a2-leather-jacket/