This is a ship’s navigation lantern, specifically a perko brass marine lantern dating from the mid-20th century (1940s–1960s). Specifically, this is an Anchor Light used on ships to indicate the ship is at anchor.
16.5" H x 10" Diameter
Material: Made of brass with a heavy Fresnel-style glass lens.
Design: The protective cage around the glass is typical of seafaring lanterns, used to prevent damage in rough conditions.
Markings: In one of the close-up photos, you can see the embossed maker’s plate that reads PERKO – Perkins Marine Lamp & Hardware Corp. – Brooklyn, N.Y., U.S.A..
Use: These were mounted on vessels to show navigation lights (red for port/left side, green for starboard/right side, and white for masthead or stern lights). They could be oil/kerosene-fueled originally, later converted to electric.
