This jacket was made by Ralph Lauren under the Polo label. It was made in the USA from black wool in a 1930s half-belt cossack work jacket style. The jacket is zipper front, with handwarmer pockets and a zipper breast pocket. The back is belted and yoked with side adjuster belts. The jacket is unlined. With a 50″ chest, this would best fit someone in the size 44-46 range.
Chest (pit to pit): 25″ (doubled = 50″)
Shoulder to shoulder: 21″
Sleeve (shoulder to cuff): 24-1/2″
Length (Base of collar to hem): 28-1/2″