Vintage rare black jet beaded cardigan. XS

Simply stunning…elaborately hand beaded black cardigan. Content and brand labels missing. The body of the sweater is lined with a black silk crepe and the body itself is either lambswool or cashmere. Its very soft. The beading on this sweater is exceptional with dense beading on both front panels and a trellis of beading all the way down one arm. Very unusual and beautiful. This is an heirloom piece. I would never part with it if it fit me. The second last button is missing, otherwise in extremely great condition for its age. Bust pit to pit 37” CBL 19”