http://www.ebay.com/itm/271478366338
This vintage hunting vest was made in the 1920s by the Red Head Brand, a premier maker of hunting garments at the time. It is an early style, high buttoning cut, with a six button front. It has canvas, closed bottomed shotgun shell loops, another hallmark of earlier manufacture hunting vests. There are loops for 38 shotgun shells on the front, and loops for another 23 on the back.
This has the earliest Red Head brand label I have yet to see. It is significantly larger than later labels, with a much more detailed duck. It reads Trade Mark Registered at the top, while labels from the 1930s and early 1940s read , “reg. us. pat. off”, and ones from the mid-late 1940s had the (R) symbol.

Chest (pit to pit):19″ (doubled = 38″)