Vintage Marshall Field's Mens Camel sportcoat

No tags in coat except for the Marshall fields tag, but it measures out to a Men's 40R. It was my father's coat, and he said it is camel hair, but again, there's no tag. It's a well made coat in a soft material and lined along the sleeves and the top of the jacket. Approx measurements while laying flat: 18" shoulder seam to shoulder seam, 24 1/2" sleeve, 31" long,