Vintage Jean Claude Killy Women's Ski Jacket Coat Size S/M READ

Size on the tag is 16 Ladies. That size does not seem to correspond to U.S. sizing but it fits like a size Small-Medium. It was photographed on U.S. size 6 mannequin (see photos). When flat coat measures 19" straight across bust (pit to pit), 17" straight across bottom of coat, 21" in length, 16" straight across from shoulder seam to shoulder seam. Sleeve measures 23.5" in length from shoulder seam to end of sleeve. Very light colored oval shaped mark on chest and a very light vertical mark near the zipper. Both stains are very light and hard to notice.