What Are Stay Sutures?

Craftsman stitching: The punching of ordinary stamps is to use a pin to punch a row of small holes in the riding seam of each row of stamps, and the paper scraps are peeled through. Another method of punching is not cutting the paper scraps in the round eyes, but cutting or punching the holes in the stamp riding seam. This kind of perforation is called riding suture, also called riding suture teeth, and its form is straight. Bar, zigzag, arc, and serpentine. ^[1]