Item #: 637902 This is an authentic TIFFANY 18K Yellow Gold 1837 Interlocking Circles Pendant Necklace. This beautiful necklace is crafted of an 18 karat yellow gold fine chain with two interlocking circles at the center engraved with the classic T&Co 1837 marks. Accent your ensemble with this timeless necklace, only from Tiffany! Follow this item for alerts. Tiffany is a registered trademark of Tiffany. FASHIONPHILE is not affiliated with Tiffany.