This is a vintage 1940s sterling silver charm with two flat hearts that slide independently with the top charm inscribed "WHO HAS THE KEY". It measures 3/4" long with the bail ring by 5/8" wide and it is marked STERLING on both hearts. I am gifting a sterling silver tested key charm for you to add to the other end of your bracelet to complement this charm. Who has the key? You do! Thank you for looking!