Custom made in London, these unusual wall clocks slowly rotate so that the ball sits on the ledge of the spiral. As the clock reaches 12:00, the ball drops into the hole, only to reappear and start again.
Aspiral Clocks
The Aspiral clocks from London are available in various colors and patterns and can be shipped worldwide.
Some of the available colors and patterns: 
Price is £350 or $540.00 USD buy them here.