The Homing Coins

Another classic of coin conjuring, made famous years ago by Yank Hoe, an Italian magician in U.S.A. Four coins, at the corners of a handkerchief, are covered in turn by two cards. One by one, the coins move invisibly to one corner. At the finish of the trick, there are four coins together at one corner. Nobody saw them move —How Did They Get There?
SECRET –A fifth coin is secretly held in the right hand finger-palm position. The cards are held in this manner when covering the coins. Right-hand card always cover the finger-palmed coin.
1) Cards are laid over coins B & C. Right hand takes coin from D and takes it under table, pretending to push it through table under corner B, but really palming it. 2) Cards are lifted to show 2 coins at B. palmed coin is held under right card (hands omitted in sketch, for clarity). 3) Cards are laid over A & B and palmed coin is left at B. Right hand takes coin C under table and palms it as in move 1.
4) Cards are lifted, showing 3 coins now at B. Palmed coin is behind right hand card. 5) Both cards are placed on corner B, leaving palmed coin there. Left hand takes coin from A and put it under table to “push it through. Actually,  left hand allows coin to slide down trousers leg into trouser turn-up. 6) So that when cards are lifted, all four coins have gathered at corner B – and your hands are empty.