Rare vintage M black beaded cardigan. EUC

This very special sweater is in near perfect condition considering it may be from the 50’s or 60’s. The jet beadwork is exceptional. There is one small area in the cuff missing a couple of beads but hardly noticeable.The content label is missing but the body of the sweater is either cashmere or a really soft lambswool.It is fully lined by hand with what feels like it could be either silk or acetate. This sweater has a hook and eye closure. This type of hand work no longer exists.