Vintage Gunne Sax Style Elegant Green and Cream Lace Maxi Dress

There are no tags on this dress, so I can neither confirm nor deny it to be an authentic Gunne Sax. But I have never seen this style in Emerald Green and muslin... isn't it gorgeous!? My mother bought me this dress for a military ball in 1980. I wore it a second time to a Christmas party the next year. It has been lovingly stored. I looked until my eyes watered and found no stains or tears. The elastic at the wrists is worn out. Surely a function of time. I was a size 11 at the time I wore this beautiful dress. But here are the measurements: Pit to pit = 19 Waist = 15 Hips = 20 Shoulder to hem = 57