1960s Never Iron Button Shirt S/S Miracle Fabric Sanforized Size 15 Spartan NOS

New in original packaging. 1960s Never Iron Button Shirt S/S Miracle Fabric Sanforized Size 15 Spartan RN Number leads to Spartan Industries. Inside collar is marked "sanforized" and "15" for the neck size. Short Sleeve. Polyester and combed cotton. "Miracle Fabric" that you "Never Iron"!! Permanent Press. Light blue.