Vintage handknit cardigan sweater size xl?

Vintage handknit cardigan sweater. This feels like wool to me. Pit to pit measurements are approximately 22 inches, laying flat. I am a size 14 or xl, and this fits me. Metal YKK zipper. This sweater is likely mid-century 1960's or 1970s, so 50 plus years old. Purple with a blueish gray yarn.