Vintage Soft Black Mock Turtle Neck Sweater

This lovely vintage sweater appears to have had the tags cut out at some point. The measurements put it at what I would consider a large. Maybe a petite large considering sleeve and torso length. I actually love the zipper at the back of the neck, means you aren't struggling to get a tight neck over your head! Due to the missing tags, I also can't tell the fabric content. Feels like either a blend, or just really soft acrylic. It picks up static electricity like mad though! So likely acrylic.