I can't find any marks on it anywhere. I think that it did have a label at one time as there are remnants of glue the shape of a label underneath.
I remember buying it, second hand, at an indoor market. It looked grey/blue at the time and when I got it home and unpacked it I was really disappointed because it was lilac. Then I took it outside to take a photo of it and it was pink. So in a box it went as it doesn't fit with my interior. I was purely curious because I was going to sell it and a background on a piece is always beneficial when it comes to selling. Now I am not sure what to do with it. Thanks to Ivo I found out it has magical qualities and I now look at it in a different light :lol: (pardon the pun!)