The one-ahead envelope ploy is very

All THIS AND MUCH

with a detailed explanation of Jim's handling of the Pass Palm)

He holds it in his right hand and strikes against his left hand

Coin Bell | JT Magic Dinosaurier The one-ahead envelope ploy isA modular framework for modern coin magic Coin Bell is a carefully designed coin magic prop built around an object rarely seen in coin magic: a Morgan coin bell. At its core, Coin Bell introduces a solid, audible object that naturally bridges multiple coin effects. Before and after the transformation, sound plays a subtle but important role first from loose coins, then from the bell itself reinforcing the audience's perception of what they are hearing