The magician shows a fabric bag visibly empty. He shows a 2 Euro coin to the audience and puts it inside the bag. In an instant, and without coverings, the coin has changed into a big 2 Euro coin!
Useful tool even for other routines. For example: a playing card with blue back changes into a red back card; a poker size card changes into a jumbo size card; a poker card changes into a blank card, etc.
We supply the bag that measures about cm 27 x 22.