1870s Polonaise - Purple Ribbed Silk with Black Trim

I started with the Truly Victorian polonaise pattern as a base,but did some very heavy alterations. By the time I was done, the thing was practically a unique drafting. This is ribbed silk dupioni, two tone, with an embroidered black satin trim. The silk was a clearance table buy from JoAnns years ago, and the trim was a trade from a customer, so I have no idea where it came from.