Antique Sherwoods Brass Nautical Oil Lantern, English, Late 1800s-Early 1900s
Features visible on yours include the original brass oil reservoir, Full Inch wick burner, four glass panels, protective brass wire guards, hinged top, perforated ventilation chimney and folding carrying/hanging handle. The overall aged brass patina is attractive and I would not polish it. I would look closely around the top, underside, oil reservoir and wick-adjustment mechanism for: "SHERWOODS LTD, " "B'HAM, " "BIRMINGHAM, " "MADE IN ENGLAND, " or BRITISH MAKE. " The documented Sherwoods example has those markings in addition to "Full Inch.