1930s 1940s vintage online style sports jacket- medium- made in Japan

Beautiful, black pique cotton sports jacket by Cushman of Japan. Design features half belt with engraved cinch adjusters, grommet waldes zipper, and chest zip pocket. In great, almost-new condition without flaws. Tagged medium.

Measurements
Chest- 51 cm/ 20 inches (pit to pit)
Shoulder- 43 cm/ 17 inches online
Sleeve- 57 cm/ 22.4 inches
Length- 64.5 cm/ 25.3 inches

All measurements taken on flat surface to the best of my ability/accuracy, but please allow for a slight margin of error.