The Royal Mail issued a series of five interactive stamps on 15 March 2005, commemorating the centenary of the Magic Circle (UK), one of the oldest and most prestigious society of magicians in the world and the first to be recognized on a national stamp. The issue features another first – a “scratch and reveal” 1st Class stamp. Rubbing it with a coin it could reveal either a ‘heads´ or ‘tails´ image.