Vintage Fostoria Glass Bowl 9" Diameter Great Condition Beautiful Serving Dish

Vintage Fostoria Glass Bowl, 9" Diameter, 4" high, in good condition. Has one flaw, shown in last 2 pictures. Almost seems to be a hairline crack, or hair stuck in finish. Possible mold line? Anyone know? Please comment. Does NOT go all the way through the glass. Barely noticeable, price reflects imperfection. Still a beautiful serving dish.