Bell & Ross‘s one-off timepiece for the Only Watch auction features a roulette design built on top of their popular BR 01 watch.

This timepiece, done in all 18k pink gold, is a tribute to the country of Monaco which will be hosting the Only Watch auction this upcoming September.

The “0″ number on the roulette wheel indicates the hours (there are 12 little diamonds on the outer edge of the dial for standard timekeeping), the roulette ball indicates the minutes. The roulette spinner which will rotate once every 60 seconds.

We take a look at the Hermes Alligator Leather Table Clock as made for the Only Watch 2009 event.

The Only Watch auction is a collaboration between Patrizzi & Co. Auctioneers and the Monaco Yacht Show. It will be held this year in Monaco on September 24, 2009.

The charity that will benefit from the event researches treatment for Duchenne Muscular Dystrophy.