Vintage 1980s Does 1940s Angora Sweater with Keyhole Back and Beading

Gorgeous black angora blend sweater from the 1980s that just screams 1940s influence to me. Sleeves are just past the elbow, with slight puff at the shoulders, scoop neck with a keyhole opening in back topped off with a pearlized button. Label reads: Shenanigans, size medium ( see measurements though), and 60% nylon, 49% angora. Would look so cute with some narrow fitted pants and ballet flats or booties.

Excellent vintage condition. Near mint with the exception of the thread loop for the button in back has come undone, see photo. I've pinned it to show it closed.

Measurements taken laid flat, doubled at bust waist and hip.
Armpit to armpit across bust: 36"-45"
Waist, at bottom hem: 27-42"
Shoulder to bottom hem: 24"

Please note: These are vintage, preworn and/or preloved items. I do my utmost best to list any issues, but signs of wear should be expected, and there are occasionally small things I won't deem worthy of note. Please feel free to send me a missive with any questions. I'm truly happy to help in any way possible and I'm always up for a chat. Any accessories shown, including crinolines, are for display only, not included unless otherwise stated.