Skull-shaped box

A distinctive skull-shaped box was among the magical artifacts in possession of Jasper Winters.

History
At an unknown point in time Jasper Winters acquired the box through unknown means. John Constantine was aware of helmet's true power and when Liv Aberdine grabbed the helmet while she was first visiting her father's house, John warned her to put it down

Behind-the-scenes

 * In the DC comics a distinctive box in the shape of a skull with three eyes is Pandora's Box.