Vintage Walborg black satin quilted evening bag with double chain strap

Pretty evening bag from Walborg; made in Macau. Black satin quilting on front; solid on back. I’m not sure what this type of top closure is called - you squeeze it and it bends/folds open? Seems to be on some type of metal frame under the fabric. Very sturdy. There are double chain handles on this bag as well. One slit pocket inside. Excellent condition. Approximate measurements: 9”x6”. Handle drop 6.5”.