Tangerine wool (with cashmere?) vintage cropped J. Crew cardigan

The perfect cardigan. Very lightweight, no fabric tag but it feels like a wool/cashmere blend. In a gorgeous tangerine color. Very soft. Shorter, bracelet length sleeves do not go all the way to wrist. Grosgrain ribbon inside front placket. No size tag either, but I am a 38C and it is about a size, maybe two, too small around the bust. Super cute. It really is a vintage one, in excellent shape. Looks brand new. I would guess it is a medium.