Vintage Tiffany & Co. Two-Tone 18k Gold 'Lock' Hoop Earrings

"Tiffany Lock is an expression of love’s enduring protection, inspired by a padlock from The Tiffany Archives that dates to 1883. Designed to keep safe that which is cherished, Lock is a universal symbol of what matters most." - Tiffany & Co. Website  ID#: EAR787 Metal: 18k yellow and white gold  Internal Hoop Dimensions: 20.8mm x 14.2mm  Weight: 5.12g Markings: 'TIFFANY & Co.' '750'