The Tiffany & Co. Atlas collection features iconic Roman numerals inspired by the 1853 Atlas clock on the Fifth Avenue flagship store.  Clasp on the chain has 925 sterling silver marking, Spain and Peretti name,  Comes with original Tiffany box, pouch and care instructions.  The chain is 16" long, the pendant is approximately 1 1/4" round.  Good pre-owned condition, may have a few light scratches.