Vintage 1970’s St. John Beaded Sequin Knit Sheath Evening Dress

Vintage 1970’s St. John beaded sequin knit sheath evening dress. Hidden back zipper, long sleeves, small shoulder pads, a v-neck. No material label, but this feels like it could be wool or a wool blend. Size: 10 Approximate measurements: Chest:19 Length: 43.5 No flaws, zipper can be a little slow, but functional, and dress is in excellent condition! Smoke free home.