This is an original Dodge Brothers motor car hub grease cap, produced approximately between 1914 and 1925. The component is cast from a non-ferrous metal, likely brass or bronze, and shows evidence of a heavily weathered finish. The design includes an octagonal-sided head for tool application and a raised circular face featuring an embossed monogram of the intertwined letters DB. This script logo was the characteristic mark of the Dodge Brothers company during this era. The interior is internally threaded to function as a dust cover and grease cap for a vehicle wheel hub. Diameter: Approximately 2.75 inches.