Gerard Works vintage 1970s navy blue 100% wool cardigan sweater jacket

Gerard Works vintage navy blue 100% wool cardigan sweater jacket. Excellent condition. Believed to be from the 1970s. Tagged size 12. Fits much smaller per modern sizing equivalent. It fits like a modern size small, in my opinion, and is listed as such. Please refer to measurements. Approximate measurements lying flat Armpit to armpit 18" Shoulder seam to shoulder seam from the back 14.75"