Advance 9415; ca. 1960; Boys Shirts - Convertible Collar. This includes; Convertible-collared shirt with long or short sleeves can tuck in or hang out. Shirt is especially good for the sports lover . . . yoke in back encourages easy movement. Shirt loves many fabric looks-including plaids! A "Father & Son" fashion, for Father's pattern see Advance 9414. Featured in Advance catalog, July 1961