Vintage 60s Marissa G formal dress

Vintage true 60s beige formal dress. Zipper closure in back. Bow and ribbon detail in back. Square neckline. No size labeled. Fits like a 4-6 petite. Armpit to around is 15.5” and length is about 49” from top of strap to hem. Lots of room in waist and hip area. Excellent vintage condition! One thing to note is 3 spots on the bottom right. I haven’t treated it because I’m too scared to ruin this dress! So they could potentially come out! Brand is Marissa G california