1970's Andrea Gayle Evening Dress

Full-length dress with a keyhole cutout in front. The tag does not specify what material this dress is made of. It feels like a synthetic blend. The tag also does not specify the exact size of the garment, but according to the measurements, I am assuming it is in the medium size range. There is some stretch to the material. It has a long zipper that run about halfway down the back. There is a small snag to the fabric on the front (pictured). PTP- 19 inches Neck hole- 6 1/5 inches Arm hole (from top to bottom of opening)- 7 1/2 inches Length (from seam close to waistline to hem)- 40 inches