Vintage hand crochet cotton and silver metallic cardigan

Beautiful hand crochet cotton and silver metallic button down cardigan, made in Hong Kong. I estimate this is from the 80s. Perfect condition, no flaws to note. Marked a Medium but seems like an XS, however, pls see measurements: Pit to pit: 17.5” Pit to wrist: 14” Shoulder to hem: 21.75”