H. Moser & Cie. Endeavour Tourbillon Concept Tiger’s Eye Limited Edition

Available in two references, this new timepiece reveals the beauty and mystery of the Tiger’s Eye stone. The Endeavour Tourbillon Concept Tiger’s Eye by H. Moser & Cie. spotlights this fine natural stone in a modern yet understated and elegant interpretation.

With neither logo nor indices, and an aperture at 6 o’clock to magnify the one-minute flying tourbillon, the dial of the Endeavour Tourbillon Concept Tiger’s Eye provides the stone with a blank canvas to express its aesthetic power.

Tiger’s Eye is a variety of microcrystalline quartz. This semi-precious stone is formed of amosite, the fibres of which are partially replaced with silica following a natural transformation process known as “pseudomorphosis”. Laid down in fine layers, these fibres cause the iridescent effects which seem to bring this stone to life.

Tiger’s Eye – with its mysterious name and mesmerising colours – comes in many different varieties, ranging in colour from grey blue to golden brown to reddish brown. The blue variety of the stone, whose colour comes from veins of fibrous crocidolite and silica, is known as Falcon’s Eye. When the natural stone takes on a red hue, it is called Ox’s Eye.

H. Moser & Cie. has created two versions of the Endeavour Tourbillon Concept Tiger’s Eye: white gold and Falcon’s Eye or red gold and Ox’s Eye. Just 50 of each will be produced due to the difficulty in sourcing stones which have the regular parallel lines and complexity required for the production of the dials. As Tiger’s Eye stones are all different, every piece they are used to create will be unique. The workshops will produce around twenty watches a year.

Unveiled at the Watches and Wonders 2021 event, the Endeavour Tourbillon Concept Tiger’s Eye watch houses the calibre HMC 804 movement. A marvel of ingenuity, this self-winding Manufacture movement features a double flat hairspring designed and produced in-house.

Thanks to this pair of matched hairsprings, the movement of the point of gravity on each spring when it expands is corrected and the effect of friction reduced, significantly improving accuracy and isochronism.

---

Model: H. Moser & Cie. Endeavour Tourbillon Concept Tiger’s Eye Limited Edition

References
Reference 1804-0222: White gold model, Falcon’s Eye natural stone dial, blue alligator leather strap, limited edition of 50 pieces
Reference 1804-0401: Red gold model, Ox’s Eye natural stone dial, brown alligator leather strap, limited edition of 50 pieces

Case
18-carat red gold or white gold, three-part
Diameter: 40 mm
Height: 11.2 mm
See-through sapphire crystal case back

Dial
Natural stone, Falcon’s Eye or Ox’s Eye
Leaf-shaped hour and minute hands

Movement
HMC 804 self-winding Manufacture calibre
Diameter: 32.0 mm or 14 1/4 lignes
Height: 5.5 mm
Frequency: 21,600 vibrations/hour
Automatic bi-directional pawl winding system
Oscillating weight in 18-carat red gold with engraved H. Moser & Cie. logo
Power reserve: minimum of 3 days
Original double hairspring
One-minute flying tourbillon at 6 o’clock with skeletonised bridges
Finish with Moser double stripes

Functions
Hours and minutes

Bracelet
Hand-stitched blue or brown alligator leather
18-carat solid white gold or red gold folding clasp engraved with the Moser logo