St. John Sport Black Turtleneck M vintage

Vintage St. John Sport black turtleneck. Size M Very stretchy sleek fabric that’s slightly sheer. No material tag but feels like spandex or poly. This is in excellent condition. Smoke free pet free home. Purchased by my mother circa 1997 at the Atlanta boutique and worn infrequently. I have several other St. John items up for sale same size. Thanks!