http://www.ebay.com/itm/271489217364
This vintage western jacket was made in the 1950s under the Lasso Western Wear label. It is single breasted, with peak lapels, scalloped, buttoned pocket flaps, and a bi-swing action back. It is made of brown on brown blanket material, similar to that produced by the Hudson’s Bay company. This one is lighter weight than that fabric, but has the same coloration and napped texture. According to the tag, the model name is the Mr. Mak. The details, particularly the shape and width of the lapels, identify this as a 1950s example. Looking through Lasso Western Wear catalogs of the period, by the early 1960s, while the overall cut was similar, the lapels had narrowed greatly, and the peak had been largely overtaken by the notch in popularity.

Chest (pit to pit): 24″ (doubled = 48″)
Shoulder to shoulder: 20″
Sleeve (shoulder to cuff): 25″
Length (base of collar to hem): 31″