From Vienna, Austria about 1920. A beautifully constructed and lacquered box is shown and a piece of glass is placed into it. The box is closed and fastened shut. A steel ball is placed on top. Suddenly, it slowly sinks through the top hole, the solid glass and out the bottom hole of the box.
Hallmarked on the inside lid (see photo). All complete and original (the box, the glass, the steel ball) and mint. Some reglue needed due to aging but parts are perfect. A rarity and a miracle all in one. Click photos to enlarge.
Price is $195 plus shipping and insurance.