Vintage 60s 70s Jantzen Men’s Shawl Collar Cardigan Button Down Sweater Grandpa

Vintage 60s 70s Jantzen Men’s Shawl Collar Cardigan Button Down Sweater Grandpa. No material tag, feels like an acrylic wool blend to me. Thick, but not super heavyweight. Approx measurements pit to pit: 20” collar seam to hem: 24” Item is pre owned. Excellent condition, minor/normal signs of wear. May have some minor imperfections or light pilling. No notable stains or other flaws. Please refer to photos for detail.