This is a 1960s olive green pure alpaca cardigan with vertical stripes in front. This is by Brentwood for Gene Littler who was a famous golfer.
The cardigan is in good condition with just a couple holes on the right sleeve and some fraying on the left cuff. Also a small wear hole near the bottom button.
This is marked size small but might also fit medium as it stretches. The measurements are:
20-21” chest laying flat pit to pit (20” is unstretched)
24.5” sleeve length from the shoulder to the cuff
19” shoulders in back
26” length from the neck down in back