An industrial metal railroad switch signal lantern featuring a black-painted finish and a flared bell-bottom base. The lantern is equipped with a top wire bail handle and a side-mounting bracket. The body is fitted with four Fresnel-style glass bullseye lenses, including two in red and two in amber. A hinged lid at the top provides access to the internal chamber, which retains a metal burner assembly. A cast mark is present on the side mounting bracket reading ARMSPEAR 28A.