We continue to highlight a few of our favorite watches from among the more than sixty watchmakers that have created timepieces for the Only Watch charity auction, which commences Sunday, November 5, in Geneva. Christie’s will auction these incredible one-of-a-kind watches to raise funds that benefit research in the battle against Duchenne Muscular Dystrophy.

While you may have seen a few of the watches set for auction earlier this year when Only Watch announced them, we thought you’d enjoy seeing many of these impressive designs again just ahead of the event.

The watches are currently touring the globe. After concluding their U.S. visit at Christie’s in New York on September 17, the tour will visit Monaco next, followed by stops in Hong Kong, Bangkok, Singapore, Dubai and back in Geneva. See the Only Watch website for tour dates and details.

In this post we highlight Bulgari’s Octo Finissimo Tourbillon Only Watch (above), a unique version of its groundbreaking ultra-thin tourbillon watch created using Italian green marble and given 110 facets.

The green marble, named Verde di Alpi, comes from the Aosta Valley, the natural passage linking Switzerland and Italy through the Alps. Green is offset with white veins, which Bulgari symbolizes as serpentines of alpine forests and snowy peaks.

The watch’s 40mm black DLC titanium polished case and bracelet is covered with the green marble in a layer of 0.4mm – 0.5mm.

The dial also features a thin marble wafer (0.6-mm). Similarly, Bulgari set the bracelet’s front and side links with a sliver of marble, leaving only the interior surface in black DLC titanium. Inside is Bulgari’s ultra-thin BVL 268 hand-wound manufacture ultra-thin mechanical movement with flying tourbillon. The full case measures only 1.95 mm thick.

Bulgari notes that the purchaser of the Octo Finissimo Tourbillon Only Watch will be offered one night in Bulgari’s newest hotel in Roma as well as lunch or dinner with one person from Bulgari Horlogerie Top management and the visit of the Villa Albani Torlonia to see a collection of marble sculptures.

Estimate: CHF 150,000 – CHF 250,000.

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