What you see above are two metal tubes in fine shape, two celluloid inserts and one glass. You can have the glass, when covered, vanish or produce liquids/fish/floating carrots from either tube. Just lift off the insert as you lift the tube. Or get a second glass and do a liquid passe passe or a "Flying Fish" effect. Click photo to enlarge. Only two known.
Price is $495 plus shipping and insurance.