VINTAGE SAFETY BURGLAR ALARM LOCK CO. DOOR CHAIN WIND UP SECURITY WARNING BELL
NO BATTERIES TO REPLACE. I COULD NOT FIND ANOTHER ONE ANYWHERE ON THE WEB. STAMPED ON THE BACK SAFETY BURGLAR ALARM LOCK CO. CHICAGO ILL. DON'T LET THIS ONE GET AWAY. DOOR CHAIN WIND UP SECURITY WARNING BELL RARE.