It is fully functional, with font and burner, and stands 14 inches tall.
This is a very old type of ship's lamp, developed in the early 19th century and later improved with the French-developed Fresnel lens. It was the standard anchor or "riding" light for sailing vessels. Its "cage" over a hot chimney helped prevent fires and soot-blackened canvas. When the Perkins company (now Perko) began the production of lights and lamps early in the 20th century, they acquired old patterns and stampings from other companies and produced a few of these obsolete lights.
This old anchor light, c.1860-1910, shows its years with a fine old, salty patina over the brass. You may want to shine it but I have chosen to leave it in its natural state. It is fully functional, with font and burner, and stands 14 inches tall. These "bird cage" lights are getting rare, particularly in this size. (12162)