http://www.ebay.com/itm/271647982141
This vintage overcoat was made in the very late 1930s or early 1940s from “Mongolama” cloth, and was sold in Bozeman, Montana by Wagner Bros. It is a double breasted cut, in a heavy gray wool blend fabric. It has lazy peak lapels, a belted back, cuffed sleeves, and a 3×6 double breasted fastening, a very 1930s style. It has a 1939 Amalgamated Clothing Workers of America union tag which puts its manufacture between 1939 and 1949. The style, and the date range where Mongolama was advertised put it at the earliest end of this time frame. The coat is fully lined, which is somewhat unusual for overcoats of this period.

Chest (pit to pit): 22″ (doubled = 44″)
Shoulder to shoulder: 19″
Sleeve (shoulder to cuff): 25″
Length (base of collar to hem): 47″