Is the box made of lead? I hope the bottle doesnt have anything radioactive in it! Thats what makes the hobby interesting, you never know what you will dig up next.
Im guessing here but since the box is made of copper and the glass has some type of powder or liquid in it and its attached to some metal clips, could it be some type of a light? Bulb perhaps? Is there any thing that would look like it would attach to a plug? Weird.