This is a genuine Cartier gold crown. The diameter of the crown is 3.3mm. It is 4.5mm long. 


*Please note: the item pictured is the item that ships. Buyer is responsible for customs charges if they apply; please do not ask for customs documents to be listed as gifts. We are selling these parts as spare repair parts and cannot ensure that they will fit your watch. Please measure the part that is on your watch and buy the corresponding size. Please ask all questions in regards to the item before paying for them. Items are final sale, and payments will not be refunded after it has gone through.