http://www.ebay.com/itm/281433509205
This vintage vest was made in the late 1920s. It was sold by Sears under the Fieldmaster Gun Coats label. This label design is the early version used by Sears during this period. In the 1930s, these were mostly sold under the Double Duty label, and had slightly different detailing. The vest (or sleeveless coat as period ads always refer to these as) has an interior game pocket with a belt adjuster. The half moon pocket gives front access to this pocket. The shoulders are reinforced and the vest has two large wraparound bellows pockets.

Chest (pit to pit): 25″ (doubled = 50″)
Length (collar to hem): 24″