The more I look at this the more it looks like a costume piece, made up to look 1920s perhaps...the drop waist and fringes are trying in vain for a 1920s effect. The bottom skirt looks almost like a lining material and does not match the top part's fabric at all. Very weird mosh up. And the fringe, I am 98% sure was added at a later date. The buttons up the back are also odd..I mean, how would this be put on unless someone was there to button it up for you? So it must a step-in style, I guess? If it is a not step-in, why would the buttons be functional, would they not be only decorative?
Of course I could be wrong, but it is an odd one for sure.