The collectible Audemars Piguet Star+Wheel watch has a diameter of 36mm. This watch is renowned for its "jumping hours / moving hours" display method. The concept of wandering time originated in Rome in the 17th century when Pope Alexander VII suffered from insomnia, and the ticking of the clock exacerbated his insomnia. Not long after, the Roman watchmakers, the Campani brothers, made a "wandering time" clock for the Pope, with the time displayed on a semi-circular window. The three transparent sapphire discs (star wheels) on this dial rotate on the dial, passing through the +120+ degree sector area above