Adding in to an entry we already have, although the company name is different, or phrased differently on later labels. My research turns up "Pandora Knitting Co." The sewn in label says "by Pandora" and the pinned on size label (deadstock - whee!) says Pandora Wear, and then Pandora Knitting Co. I am dating this to the 1940s based on style of the sweater, ads from the era, and the style of the size label and placement, as well as lettering.
ADDED TO THE LR 11-22-24, THANKS SADIE!