This vintage jacket was made in the 1950s by noted western wear manufacturer, H Bar C ranchwear. It has razor sharp peak lapels, a squared off cutaway, patch pockets with scalloped, buttoned pocket flaps, a three button front, and a western scalloped yoke. It bears a 1949 amalgamated clothing workers of america label, with the pre (R) variant that dates it between 1949 and 1961. With the overall styling, I would place the dating at the tail end of the 1950s.
Chest (pit to pit): 21-1/2″ (doubled = 43″)
Shoulder to shoulder: 18-1/2″
Sleeve (shoulder to cuff): 27″
Length (base of collar to hem): 32-1/2″