Hi! I found a small pile of vintage lingerie/slips at an estate sale that included pieces that are clearly from the 1920s to clearly from the later 1940s, with a few 1960s pieces as well. Also included was this piece. I was wondering if anyone with expertise in finishing techniques could shed any light on the construction. It is silk, with lace at the neckline and tie-back waist. Most of the seams are folded over and stitched (is there a name for that?) like I am used to seeing on 1920s pieces. But the two seams running down the front are serged. It's almost like they didn't serge all the seams that would closely touch the body, but the two front ones (only on the skirt portion) are serged. Has anyone seen anything like this before? Do you think the serged portions are original? It looks 1930s-ish to me, does that seem right? - ps don't worry I only hung it on the wire hanger for a quick photo Any thoughts much appreciated!