1940s floral rayon evening gown maxi

Stunning 1940s (maybe late 30s?) evening gown. I believe it’s a rayon crepe. Vibrant colors. No color bleed. Adorable details at neck and puff sleeves. Side metal zip. Some light stains mostly around the hem and pits as expected for a dress of this age. Back darting has come loose. Look carefully at photos. I haven’t tried cleaning this. Bust 34” but I wore it at 36”. The gathers are forgiving. Waist 28” Length 56”