http://www.ebay.com/itm/281168068268
This vintage coat was made in the late 1930s by the Hettrick Mfg. Co. of Toldeo, Ohio. This was their signature model, the “Gun Coat”, with “free swing” shoulders, a corduroy collar and cuffs, roughout horsehide shoulder reinforcement, a gun pad on the right shoulder, large pockets, and an interior game pocket. The water-resistant game pocket does up with bell shaped Talon zippers. At the end of the listing are a couple of ads for this model of coat, dating from 1936 and from 1940.

Chest (pit to pit): 23-1/2″ (doubled = 47″)
Shoulder to shoulder: 18″
Sleeve (shoulder to cuff): 23-3/4″
Length: 28″