Vintage wool knit cowichan sweater

This vintage cowichan sweater is a timeless piece. It is in excellent condition, with the only obvious issue being a bit of light staining around the collar (see pics). I have not tried to wash it, but I suspect that washed properly, the staining would come right out. sweater is being sold as-is. Pit to pit = 22.5” Length = 27” Sleeve (pit to cuff) = 16.5”