Grant's Tricky Bottles

The performer invites a spectator up to help him. Each of them takes a bottle and cover. The spectator is instructed to do exactly as the performer does. Each of them places a cover over their bottle. Holding a hand at each end of the covers, they are reversed end for end, first to the right, then to the left, etc. When the covers are raised, the performer’s bottle is always upright while the spectator’s is always upside down. This can be repeated as many times as desired. The performer then excuses his assistant saying that he apparently does not understand magic. As a climax, the performer raises his cover showing his bottle to be upright. The cover is lowered and immediately raised and his bottle has turned upside down quicker than the audience can say “Blackstone.” A few paint chips and dents to bottles, wear to label on the bottles, else in good condition.