Tiffany & Co., 1837 gold pendant, featuring a 25 mm 18ct yellow gold ring with '750 T&Co 1837' inscribed three times to the front and verso, stamped 'c Tiffany&Co. 750', upon a fine curb chain also stamped 'c Tiffany&Co. 750', 12.84 grams length 47 cm (chain)