This is a ready made of baking back from 1916. It's a borough twine between two plaques of copper brass. And before I finished it, I asked Doug to put something between inside the borough twine. And never told me what it was and I didn't want to know it was a sort of secret. It makes a noise, so we call this a ready made within secret noise and listen to it. I don't know, I don't know. I would never know whether it's a diamond or a coin.