Keys have their own curiosity, and antique ones have it exponentially. I have the most wonderful stash of skeleton keys from the late Victorian era, anywhere from 1890-1910. They are worn and nicked, tarnished and crusty, even after being cleaned. What treasures!
Elements for a mysterious fairy tale, not quite sure of the ending. Silk roses, a fair auburn-tressed maiden, sparkling jewels, a very old key, and a skull.