True Vintage Cold Rayon or Silk 50s 60s Mosaic Pattern Day Dress Size L Volup

Vintage dress with a tile / mosaic /geometric pattern in shades of blue, white, and yellow. Neckline has a tie detail, short sleeves, and a fitted waist. The skirt is a straight, knee-length style. Lined, metal Ries side zip. Matching fabric covered belt. This dress is in great vintage condition overall, and is very wearable. Fit me at a size large, but please see photos for flat measurements, and feel free to ask any questions. Shown on size small mannequin. Flaws: stain in inner lining as shown in picture. Does not show on outside. I believe the shell to be silk or cold rayon, lining may be synthetic. It's a style typical of mid-20th century fashion, likely from the 1950s or 1960s.