Unknown Metallic Embroidered Evening Jacket

Unknown Metallic Embroidered Evening Jacket Tag is removed as seen in photo. Never worn NOS. Light weight stunning metallic thread through the jacket. 5 crystal like buttons. Ling sleeve. Black satin like material lines inside Darted in front and back. Please review photos. It’s stunning. Pit to pit app 17 1/2”. Shoulder to hem app 23”. Sleeve app 25 /12”. This jacket is really amazing.