Vintage 1950s USA Letterman Sports Jacket
By Duckster Sportswear.
This jacket fastens with popper fastening front, has collar, hip pockets, letterman patch and OHS sports patch. 
This jacket has some general signs of wear. Patch naively stitched on.
Measurements
 
I would estimate this jacket to best fit a Men’s Medium or Large, depending on required fit but please look at measurements below:
Pit to Pit 23”
Sleeve (Collar to Cuff) 31”
Length 30”