This is a rare original 1914 Miller-Chapman CO. Security Auto Theft - Signal System. It is steel about 10 1/2" long, 5 1/2" wide, 1 1/2" tall and has 4FP " embossed on the inside. It has the original brass tag and a pair of keys. This is a neat early automotive wheel locking system in very nice working condition with most of the original paint. Please ask questions about payment options before bidding.