Vtg Bonnie Cashin Ivory Wool Tunic Sweater Collar Side Slits M

Vintage Bonnie Cashin pullover sweater in a rare and interesting tunic design with a convertible collar (stand up or fold over) and a side slit on each side of the waist. EUC - 100% wool with 1 small spot as noted in pics. No other notable wear, just wrinkles from storage. Color is closer to a cream than pure white. Guesstimating this style to be from the 70s/early 80s. No size tag, listing as a Medium but please see pics as it could fit a variety of sizes depending on intended fit. I am an XS and it does feel a little too big on me.