TIFFANY GREEK KEY LEADED SHADE AND ONYX FLOOR LAMP BASE. 20”. Est. $25,000-35,000. Published March 17, 2015 at 572 × 1567 in TIFFANY GREEK KEY LEADED SHADE AND ONYX FLOOR LAMP BASE. 20”. Est. $25,000-35,000. Share this:FacebookLinkedInTwitterPinterestPrintEmail