The one-of-a-kind Audemars Piguet Royal Oak Perpetual Calendar in black ceramic with blue dial sold for CHF 800,000 (over PHP 41 M!) at the Only Watch charity auction benefitting the Monaco Association against Duchenne Muscular Dystrophy. The funds are meant to help with the research activities of the programme.

The Audemars Piguet Royal Oak Perpetual Calendar in black ceramic—Only Watch unique piece—manufactured for the occasion evokes the last moments of light cast by the sun thanks to the ‘skylight’ blue Grande Tapisserie dial, polished counters in solid grey gold and orange-tinted photorealistic moon. Juxtaposed against the entirely hand-finished black ceramic Royal Oak case, bezel and bracelet, the transition from the blue, orange and silver dusk to the pitch black of night is a powerful combination. In addition to the unique dial, this Only Watch unique piece is the first black ceramic perpetual calendar wristwatch to feature a black ceramic caseback with sapphire display back revealing a unique hand-finished black oscillating mass.

Take a look at this rare beauty: