90s lambswool striped sweater 1/4 zip up stripes size M

Reposhing this item I purchased from @twocatsfashion. Loved it, but ready to rotate for something new. Small grey mark on one of the yellow stripes - see photos. It does not appear to be a stain, it looks like a discolouration in the yarn. Not very noticable, looks darker in the photo. Questions? Leave a comment below!