Edge Grip

From MagicPedia

Edge Grip is a specific way of concealing a coin in the hand. While the grip itself was published in Modern Coin Magic by J.B. Bobo, the text gave no way to get into or out of position. This is vital if a grip or sleight is to be used successfully and have larger applications.

Edge Grip was popularized through many ingenious applications by David Roth, who eventually published all of his material on the subject in CoinMagic (Kaufman, 1981) and David Roth's Expert Coin Magic (Kaufman, 1985). One of his most famous routines using Edge Grip is Roth's version of John Ramsay's "Hanging Coins".