I hope someone has seen this type of work before. It is a double walled salt, similar in shape and size to "mercury" glass salts. Ht:2.5 in, width across top opening: 1.75", max. width on bulbous sides : 3 ". The inner layer is dark blue, including the foot. The outermost layer of glass is clear. In between these walls are images that appear to be on cheap paper, drawn with cross-hatching for shading. The cut-out pictures may be a clue as well as the glass form and technique. Unfortunately, I feel this piece has deteriorated while in my care. It did not come with a sealed bottom hole, either in glass or with a cork, as is found in some mercury ware. So it seems that the original powdery substance sticking to the walls between the layers is flaking off. Or maybe it wasn't originally powdery? Looking from the top into the well of the salt does not look much different than the bottom view, except of course, that the interior is smooth and intact, but is transparent enough to see through to the exterior bottom. When I was last at Corning museum, they had no European curator to confer with, and I haven't wanted to shake it up on plane rides to glass meetings across the US to ask opinions. Do you think I should plug the bottom hole? I live in dry Southern California. I will show more illustrations in the next post.