Vtg Melanie Lyne Beaded Dress Women's Large Black/Purple Formal Party READ

There is a small area on back left side of the dress that has some white residue that I believe will come out if rinsed. Possibly detergent residue but not positive. There is also some beads missing (3 on the back of the dress) and 1 under the arm, there maybe a few others that were missed because of the intricacies. There are threads that can be tied off so that the beads stay in place. The dress was soaked in mild detergent and hung to dry. Pit to pit measures 19 inches|Waist measures 17 inches|Shoulder to dress hem measures 36 inches Great Mother of the bride dress, wedding guest, formal wear, Christmas Party, New Year’s party