Original, red, glass, antique, Dietz #470 STOP lens in very good condition. Measures 5 3/4" in diameter and is 7/8" convex. Has nice, rich color when backlit; has two tiny chips on edge of rim that won't show when installed in bezel of railroad lantern or auto/truck/motorcycle taillite. No cracks. This item was recently found in an estate and is a nice collectible.