When previously uncovered at the 2015 release of the Salon International de la Haute Horlogerie (the SIHH ), the Clé de Cartier has been heartily welcomed by both the horological press and authorities, fundamentally as a result of its unadulterated, dapper and clean design, set absolutely in the vein of the Cartier custom. The bended profile, the sharp mix of the crown and the modern interpretation are key components of its prosperity. This watch, which was still just accessible with a straightforward (in-house) development, comes now with an interesting mysterious development complication. Here is the Clé de Cartier Mysterious Hour.
Using a similar oval and bended case (with an incredible comfort on the wrist) and a similar key-style crown (Clé in French), Cartier adds to its most recent option a more complicated, yet very fascinating development and dial, where the hands appear to skim over the dial – with no mechanical connection with the remainder of the development – something we previously showed you here, with the Rotonde de Cartier Mysterious Hour (and some different watches with this equivalent sort of complication). In the tissue, this showcase is very mysterious and once on the wrist, it’s quite interesting to see the hands turning with no (obvious) cog wheels or pinions. Notwithstanding, no wizardry or witchcraft here except for unadulterated mechanical inventiveness.
Turning back the Clé de Cartier Mysterious Hour and you’ll find that accomplishing such a showcase requires a few mechanical stunts, including a particular design for the development where everything is scaled down and put on one side, from the barrel, the stuff train, the escapement and the directing organ. The Caliber 9981 MC that powers the Clé de Cartier Mysterious Hour (and its Rotonde kin) isn’t little at 31.9mm, yet consider that practically 50% of it is dedicated to the straightforward dial. And it’s not thick either, at 4.61mm… Now you could expect the force save to be very short, because of a little barrel. No possibility, as you’ll get 48 hours of energy (a remarkable normal for a somewhat thin watch). Moreover, the development isn’t moderate (something that could clarify the more extended force reserve…), as it ticks at 28.800 bph. In view of specs, it’s a significant noteworthy development, considering the small space took into consideration the mechanical parts.
Back on the actual presentation. So what’s the stunt? Truth be told, to make this visual effect where time is by all accounts displayed with the assistance of divine forces, the hands are placed on straightforward outfitted plates of sapphire and are driven in the edges of the case. Rather than moving the focal pinion that is connected to the hands, the stuff train drives straightforwardly the outskirts of these two sapphire circles on which the hands are set. Not excessively complicated but rather clever!
The rest of the watch is dedicated to the normal Clé de Cartier and to the remainder of the Cartier assortment. The case grows a piece at 41mm (rather than 40mm) to “absorb” the new development however keeps precisely the same design. The dial is a somewhat skeletonized and brushed plate, with the commonly Cartier blue Roman numerals and openings that gives a fractional view on the fundamental plate of the development. Obviously, the key-style crown, significant of the assortment, and its cabochon sapphire, are available. The Clé de Cartier Mysterious Hour is accessible in 18k rose gold (estimated at 62,000 Euros) or in strong palladium (evaluated at 66,500 Euros). Cartier.com .