Marco's Comments:
Just three commercial effects by Bruce Bernstein. They are all very practical: the first is a two-phase routine with a Koornwinder car, the second is a very commercial use of Curry's Swindle Switch, while the third one are actually two great presentations for psychological forces, one of which uses Bernstein's "PSI-Deck".
Very good material, very commercial.
From the Mullica auction.