Authentic! Tiffany & Co. Silver & Titanium Oval Key Pendant is 1.75 inches. Tiffany Chain is 16" w/ Lobster Clasp. Polished To Look Beautiful! Hallmark: Tiffany & Co. 925 TI Comes with Tiffany Pouch and Box. Wonderful Present for Yourself or Anyone You Love! Will Surely Bring A Smile!