Old 28 29 inch shuttle looms produced denim where selvage closed. Vintage Levi’s jeans had a single red stripe along both selvage. Lee had a blue/green with one; Wrangler was yellow. When vintage shopping for jeans wore check jackets and jeans for selvage because they are a great clue to the real thing!
ECO-FASHION-DENIM AND DIAGRAMS DICTIONARIES OVERVIEW