Without seeing photo's of your item it will be difficult to determine if your bracelet is an authentic Tiffany & Co. piece or if it is a reproduction/fake. Tiffany & Co. will always clearly mark their jewelry, they use several "stamps" (markings on the clasp or inside that indicate it was made by Tiffany) They used quite a wide range of markings throughout the years, though the common markings can be found listed online. I hope this helps.
