Cyril Magic - With A Bottle

Dematerialization magic by cyril. All you need is a bottle and fast hands. Answer is PK ring. Also known as psycho kinetic ring. He shoves cap in there when camera does not show for about 3 seconds, and since the ring is magnetic, it is magnetic to the metal cap inside. Then you see him release his hand as the cap drops to the bottom of the bottle and he palms the other coin. Good guess though.