Vintage 60s letter sweater

Black letter sweater from the 1960s with a red letter "D", 3 pins, and 3 stripes on the sleeve. Hip pockets are knit with a contrasting ivory yarn. There is a small hole in the back of the right elbow, as shown in the picture. Otherwise, the sweater is in excellent vintage condition. I believe this is a men's size small. Flat dimensions are shown in the pictures.