http://www.ebay.com/itm/271391492640

This vintage mackinaw coat was made in the mid to late 1940s. Going by the style and the lining, it’s likely that it was sold by Sears under the Hercules label. Whereas most plaid jackets were made for the hunting market, this one is of the type marketed in the 1940s as workwear. It has a double breasted front, handwarmer pockets on the chest and large flapped pockets on the hips. The large zipped pocket on the right side is a nice and rarely seen detail. It does up with a bell shaped Talon zipper, which helps with the dating. This has a half-belt back. The coat has a blue plaid lining

Chest (pit to pit): 25″ (doubled = 50″)
Shoulder to shoulder: 21″
Sleeve (shoulder to cuff): 24″
Length: 29″