Vintage WWII 40s Kors & Moorman Button Fly Army Uniform Pants

Incredible pair of vintage army pants made by Kors & Moorman. From what I can tell, these are WWII, 1940's. Seem to be unworn, but have some small white marks here and there (see photos). Interior has 102 x 80 CM. Measures 16.5" across waist, 21" hips, 16" rise, 32" inseam.