NOS 1955,1956 and 1957 Day/Night Mirror. All three (1955,1956 and 1957) Ford Accessory Catalogs show this mirror (B5A-18400-A) to be the correct one. The Description of this mirror is : "Turn off blinding glare from headlights behind you with a flick of your finger! Simply press the tab at the base of this optically designed mirror,and glare is deflected away from your eyes. Large-size,made with non glare glass. Ideal for night or day-time driving." Beautiful Accessory with Show chrome and mirror surface. Box included free of charge. "Fordlishly" designed and does make driving at night safer. DON'T miss out! All items are sold as-is,not returnable. Thank you for buying!