all original american industrial gooseneck type "esrobert" factory office table or desk lamp fabricated around 1919 by s. robert schwarts & co., new york city, ny. the vintage industrial lamp contains a weighted cast iron base supporting a tubular extension pole with pre-drilled hole for lamp cord. the double-sided, threaded end brass gooseneck arm retains its rigidity regardless of angle of adjustment. the wrought steel parabola-shaped reflector retains the original green enameled finish, with a metallic (reflective) silver interior finish. the push button weber socket is original and intact.