This is an authentic CARTIER 18K Yellow Gold Tank Clock Lapel Pin Brooch. This rare pin is crafted of 18 karat yellow gold and features a classic Cartier Tank case with a white dial, black Roman numeral hour markers, faux hour and minute hands, sapphire crystal, and a blue spinel crown. This is a unique piece with the classic style of Cartier! PLEASE NOTE: This is not a functioning clock. Follow this item for alerts. Cartier is a registered trademark of Cartier. FASHIONPHILE is not affiliated with Cartier.