Vintage 1930’s-40’s suit jacket. Modern size 4

Channel style wool and possibly silk lined vintage jacket. Some damage in lining but won’t affect the way it wears. Outside is perfect! I wear a size I would say this would fit a 2 fo or 6 but I’m a 4 and it fits great. Shoulder to shoulder across back is 14” pit to put 19 1/2” sleeves are 20” long