Vintage delicate sweater by Cecile

Beautiful vintage delicate sweater by Cecile maison Francaise .This is a thin sweater and has no label about the material. It feels like a wool. One of of the black rounds around the neckline is loose. This would easy to fix and is not very noticeable. It says size 12, looks a Petite.From armpit to armpit is 20” and from shoulder to bottom is 20”