Tiffany & Co. 1837 Lock pendant, hallmarked with T&CO and the year Tiffany was established. Sterling silver. On a 16" chain. It's a very beautiful and classic 1837 Lock pendant.The 1837 Lock pendant is a versatile addition to your wardrobe.Why not?On a day you'll remember forever, don't forget to look graceful, stunning, and absolutely timeless. It will be the perfect accent piece for every occasion, from afternoon drinks at the wine bar to an elegant black-tie ball.Give this lovely Tiffany CO 1837 Lock pendant to the queen of your heart today.