Vintage 70s Black Halter Neckline Maxi Cocktail Dress, Sz 11/12, Party Dress

Vintage 70s Black Halter Neckline Maxi Cocktail Dress. Button collar and back zipper. The dress gathers into a deep v where there is a stitched diamond shape. No brand tag. The size tag say 11/12. Fabric feels like polyester. The dress is in very good condition. The only flaw is some of the stitching is coming undone. See the last picture. Measurements laying flat: Pit to pit 16" Waist 13" Length from the top of the neck to the boom 58" Ships next business day.