Vintage Justin Allen Knitted Button Down Sweater

Vintage button down sweater manufactured by Justin Allen with a three banded design and black, purple, and green color scheme. Missing the third button but no other major damage was noticed. Lying flat, it measures about: 19" front top to bottom, 19.5" armpit to armpit, and 18" sleeves. There's a bit of pilling to the fabric but no noticed holes or rips.