http://www.ebay.com/itm/271397591682
This vintage coat was made in the 1930s by Gordon & Ferguson of St. Paul, Minnesota. At the time, this would have been sold as a “sheelpined coat”, though the term “shawl collar mackinaw” has come to also encompass this style. It has a broad mouton shawl collar, and is 3/4 lined with sheepskin. Consistent with the early dating, the sleeves are lined in a blanket material. The pockets all have triangular leather reinforcements at the corners. The leather loop closure for the buttons, as opposed to corded loops or buttonholes seems to be a uniquely Gordon and Ferguson detail. I have only ever seen it on coats made by them and by Guiterman Bros. after the G&F buyout in the late 1920s. See that Guiterman Town & Country here: https://vintagehaberdashers.com/2013/12/19/town-and-country-sheeplined-coat/

Chest (pit to pit): 21″ (doubled = 42″)
Shoulder to shoulder: 20″
Sleeve (shoulder to cuff): 26″
Length (Base of collar to hem): 34″