First Military buckles are painted in a very pink/brown paint and therefore are produced from spherical inventory, the buckles on your specimen are stamped & painted black & Moreover the weave sample to the strapping appears to be comparable to U.S. manufactured webbing and isn't common wartime Japanese webbing. https://spencerjquzd.sharebyblog.com/28369475/how-much-you-need-to-expect-you-ll-pay-for-a-good-white-overlap-tank-top-and-flare-pants