Tiffany Studios Lamp with Conch Shell Shade, New York, New York, bronze dore base, stamped mark Tiffany Studios New York, shade natural shell ground to mother-of-pearl layer, single socket, total ht. approx. 14 in. (38 cm).Literature See Alistair Duncan, Tiffany Lamps and Metalwork (new edition), p. 67 for base 322.Tiffany Studios Lamp with Conch Shell Shade,New York, New York, bronze dore base, stamped mark "Tiffany Studios New York," shade natural shell ground to mother-of-pearl layer, single socket, total ht. approx. 14 in. (38 cm).Literature: See Alistair Duncan, "Tiffany Lamps and Metalwork" (new edition), p. 67 for base #322. None