original highly desirable c. 1910-20 antique american diminutive brilliantly colored emerald green "cased glass" replacement lamp shade possibly fabricated by or for h.g. mcfaddin & co., new york. the "slim helmet" or shell-shaped lamp shade contains an interior white reflective glass. the intact "uno" style brass perforated shade fitter retains the original set screws. multiple shades in this exact fashion available.