This is a 'Do As I Do' effect. Everything starts as expected but before long the volunteer is having difficulty keeping up with the crafty magician.
The bottles are placed in the tube, the tube turned over. The magician's bottle rights itself at will, but the volunteer is just not getting it.
The tubes are crafted from cardboard and the bottles are real glass. The gimmick is not displayed here.
I obtained them around 1999 for about 30$. As it turned out these were for display only and the owner had not really meant to sell them, but she let me keep them anyway.
Please comment, I appreciate it.
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