Tiffany & Co Sterling Silver Keyhole Bangle w/ Diamonds Bracelet. The piece is in great used estate condition. It does not come with a box or pouch. The piece is engraved K.M. on the inside but this can stand for Kiss Me rather than initials. The piece reads "Tiffany & Co New York" on the front and is signed Tiffany & Co AG925. on the inside. The bracelet measures 2.45" in diameter, it measures about a 7.4" circumference and .4" wide. It weighs a total of 31.5 grams.