A brass and copper masthead lantern
Gas Accumulator Co. (UK) Ltd., 20th century
probably from a lightship masthead or a buoy; conical in form, with a brass cylindrical base detailed with red enamel, rising up to a glass fresnel lens with a copper mushroom formed top. Wired to light up [not tested].
34 x 15 in. (86.4 x 38.1 cm.)