I believe this knit top dates to the late 1940s to 1950s, but I'm not 100% sure (I initially thought the sweater was slightly older because of the variegated knit and puffed sleeves, but the metallic knit fibers are more common in 1940s and later garments). It's an amazing piece with puffed sleeves, in maroon and purple with gold throughout and gold knit waistband and cuffs.
Size: medium to xl through bust/waist, but check sleeve cuff circumference measurement because this measurement is smaller, so probably better for the smaller end of the size range
Shoulder: 16.5 from seam to seam (and there's stretch to this measurement)
Sleeve cuff (this is the smallest measurement): max is 11" circumference approximately 10.5-11" from shoulder seam