A historic piece of Americana, this sterling silver key ring was created by Tiffany & Co. exclusively for the Millennium Celebration at the iconic Waldorf Astoria Hotel on December 31, 1999. The charm measures 30.3mm tall by 30.5mm wide by 1.8mm thick, while the key ring itself spans 28.3mm in diameter with a 9.2mm thickness. One of the balls unscrews to allow easy addition and removal of keys. Signed and weighing 10.9 dwt (16.9 grams), this limited-edition collectible is no longer in production, making it a rare find for Tiffany enthusiasts and millennium memorabilia collectors alike.