http://www.ebay.com/itm/281231689469
This vintage jacket came from the warehouses of Western Costume of Hollywood, and was used in Westerns and in 19th century period pieces. With the texture of the fabric and the placement of the pockets, I would guess that this was probably cut down from an old shawl collared overcoat or mackinaw, and had the collar trim and extra buttonholes added by Western Costume. The jacket has fairly heavy wear, which is to be expected from something that’s been in a movie costume department for decades.

Chest (pit to pit): 21″
Shoulder to shoulder: 19″
Sleeve (shoulder to cuff): 23″
Length: 20″