Hi! I've recently acquired this two piece set and am stumped as to dating it. Here's what I know: the dress is European-made and home made/custom made. the fabric is a thicker variety of cold rayon. The construction on the dress is very interesting as there is only one side seam (!), and one seam in the back and there is a longish and thin dart going from under the sleeve to about waist level on the other side. The neckline is like a convex V. The back zipper is metal Koh-I-Noor with KIN engraving. The sleeves are set in. There are bra strap holders sewn on. All seams are hand-finished, both on the dress and the jacket. Jacket has a peter pan collar and small shoulder pads and metal buttons and bound buttonholes. It's a bit boxy and fitted in the back with two rager dats. It looks like it has been shortened by about 5 cm / 2 in as an afterthought... but if the hem were to be let out, the hem is only turned once and stitched so that would leave a raw edge. I hope you can help! Let me know if you need more photos, please, I'll be happy to take them.