Vintage, attributing 1970s. Home sewn so no tags. The selvedge in one of the seams says "Hi Fashion Fabrics Inc. Patt#7643" along with a cotton symbol. The cotton symbol debuted in 1973 so it is no older than that.
The dress is unlined. You can see in photos of it modeled on the dress form that the dark form shows through the fabric somewhat.
There is a pocket on either hip!
Bust darts tailor the bodice along with a flattering empire waist panel. There's a nylon zipper up the back with a hook and eye closure at the top.
No flaws, fabric is new and never washed.
Measurements:
Shoulders 16.5"
Bust 40" / bust height 11.5" (shoulder to largest point of bust)
Underbust 36"
Waist 34" / waist height 16.5" (shoulder to waist)
Hips 48"
Length 36.5"
Sleeve 13.5" from shoulder

Thanks for looking!
I use all repurposed materials to ship, please excuse any weird packaging :)