A TIFFANY STUDIOS TURTLEBACK LEADED GLASS AND BRONZE DESK LAMP, the leaded glass three-paneled shade, each panel with a turtleback tile in its center, the base with a mosaic sphere of turtleback tiles on a circular bronze foot, issuing a bronze horizontal arm--18 in. (46 cm.) long, 14 3/4 in. (37.5 cm.) high