This one appears to be a salesmen’s sample in that it is marked on the breast of the heel with a paper tag sporting the style number and is clearly deadstock having never been worn.
While it has the bulbous toe and porcelain buttons of the Edwardian Era, it marks the return of the French heel – after about a decade of the ultra-straight military heeled styles.
From the look of the heel and toe (see the Montgomery Wards catalog page below) I would date this at around 1915. Not quite twenties, but not firmly Edwardian.
Kind of funny that losing the military heel in favor of the French heel has Wards calling them “military boots”!
You can see very early rumblings of the sharpness of deco stylings on this page.