BOVET 1822 Récital 22 Grand Récital – 9 Day Flying Tourbillon Tellurium-Orrery and Retrograde Perpetual Calendar

After Récital 18 Shooting Star tourbillon (2016) and Récital 20 Astérium (2017), Bovet updates its trilogy of celestial timepieces by unveiling the Récital 22 Grand Récital, the third chapter in the collection.

This grand astronomical watch boasts a Tellurium-Orrery, with the sun represented by the flying tourbillon, whose carriage bridge evokes fiery rays. The striking hemispherical earth rotates on its own axis and shows the hours on a natural 24-hour cycle. Finally, a spherical moon orbits the earth according to the exact length of its synodic period, i.e. 29.53 days.

To accentuate the splendor of the sun, the tourbillon carriage has been raised above the surface of the movement. Its original patented construction is characterized by its central attachment, endowing the piece with exemplary chronometry, while achieving a peerless level of transparency. Meanwhile, the five arms of the titanium carriage bridge surround the regulating organ. This three-dimensional representation of the sun showcases the finish of the bridge’s five arms, rounded by hand, which subtly frame the timepiece’s celestial decoration. By rotating once every sixty seconds, the tourbillon indicates the seconds by a hand affixed directly to the carriage wheel and travels over a scaled twenty-second sector.

Surface of the hemispherical earth is adorned with an engraved and hand-painted map, on which the oceans, mountains, deserts, and forests are executed in painstaking detail. The hemispherical surface also incorporates luminescent substances into the miniature painting. In this way, the earth becomes a radiant highlight in the dark, as the earth itself appears in the heavens above.

To enhance the sense of realism, the artist painted clouds and air currents onto the globe’s surface. As they are separated from the earth’s crust by the thick layers of lacquer, the clouds appear to be floating in mid air. At the base of the globe, a graduated scale displays the hour by means of a three-dimensional polished titanium hand, situated between the tourbillon and the globe.

Customers can also choose the orientation of the painted world map so that their favorite location would be positioned on the earth-sun axis when the timepiece displays midday. This customization option means that each movement and timepiece is assembled once the collector’s special requests have been received. This customization also makes it possible to determine where it is currently night time in the world thanks to the black and white coloring of the ring surrounding the earth. This concave circular indicator, widened at the bottom to display the hour, demonstrates the masterful skill of the micro-mechanics responsible for its manufacturing.

The spherical moon makes a complete orbit once every 29.53 days exactly. The high-precision mechanism that powers the moon and moon phase display, also visible on the Earth’s concentric, needs only one day correction in every 122 years. The sphere is divided into two parts: one black, while the second is engraved with the textured surface of the moon. The engraved sections of the second half are filled with a luminescent substance, which makes it possible to clearly see which part of the moon is directly illuminated by the Sun. This rare combination of indications is the subject of one of the five patents protecting the movement of the Grand Récital.

Further, the retrograde minute and power reserve indications are displayed on hemispherical sectors curved to mirror the globe. Sapphire glasses situated in their centers magnify the mechanisms underneath, each seemingly transcending the spatial confines of the case.

Lastly, a circular aperture is positioned on the left-hand side of the tourbillon carriage. Its metal bezel also contains a magnifying glass, which makes it possible to read the date displayed on a glass disk circulating on the lower section of the movement. To emphasize the date, a ring machined directly from solid luminescent material highlights the inner edge of the aperture. It is symmetrically positioned in relation to the upper cone ring and the power reserve wheel, which is made from the same material.

Reversing the timepiece and looking through its large sapphire crystal, the viewer beholds a vast bridge decorated with circular Côtes de Genève, centered around the tourbillon’s axis. Various apertures open onto the hour, day, month, and leap-year indicators, and a glass date disk guided by the bridge, which is displayed on both sides of the movement. This combination of indications acts in concert as a sort of mechanical brain that governs the perpetual calendar. This clever decision by BOVET watchmakers ensures optimum accuracy in the display and setting of the time reading and all the Tellurium functions.

Specially designed and developed for the Grand Récital, the perpetual calendar comes with innovative features, including the original addition of a patented, double-sided date disk display. It is driven by a retrograde mechanism with a micrometric rack, also patented, which optimizes operation while reducing the amount of required space. The abrupt accelerative and decelerative forces acting on the date disk, when combined with the inertia of its mineral crystal material, led the watchmakers to develop a regulator train that dissipates the energy when the disk retrogrades.

For this timepiece, the Manufacture created a mechanism to simplify the entire perpetual calendar’s adjustment. In addition to the traditional correctors used to adjust each indication individually, the watch features a push-piece between the upper lugs that simultaneously adjusts all the timepiece’s functions. Therefore, if the timepiece has been stopped for six days, for instance, this push-piece can be simply pressed six times to perfectly adjust the perpetual calendar and Tellurium functions simultaneously.

In terms of technical characteristics, a single barrel supplies the 472 components of this complex caliber, while providing a power reserve of over nine days.

A double-sided flying tourbillon was chosen to regulate this caliber. This patented construction improves chronometric performance by significantly reducing the lever arm at the point of attachment and intelligently distributing mass. The sprung balance and escapement are positioned on either side of the central attachment point in an atypical architecture that also enhances the piece’s aesthetics, as it renders the tourbillon’s attachment to the movement practically invisible. Meanwhile a variable-inertia balance wheel, paired with a balance-spring manufactured in BOVET’s workshops, ensures the accuracy of the movement by oscillating at 18,000 vibrations/hour.

The case’s design, inspired by the shape of a writing slope and measuring 46 mm in diameter, is inseparable from the structure of the movement. Available in red gold or platinum case versions, the Récital 22 Grand Récital will be presented as a limited edition, so only sixty Grand Récital movements will be issued by BOVET’s workshops.

Technical details
Model: Récital 22 Grand Récital

Case
Type Dimier
Diameter 46.30 mm
Thickness 19.60 mm
Material 18K red gold or 950/1000 platinum
Water resistance 30 m

Strap
Material Full-grain alligator
Buckle 18K red or white gold

Functions
Hours (24hr), Retrograde minutes, Seconds on the double-sided flying tourbillon, Precision Moon phase, Retrograde double-sided date, Power reserve. / Retrograde perpetual calendar on the back.

Patents
Double-sided flying tourbillon
Micrometric track for retrograde display
Timepiece movement comprising a display mechanism for information relating to the movement of the moon
Timepiece movement comprising a control organ which activates several mechanisms simultaneously
Timepiece movement comprising an indicator visible on both sides of the movement simultaneously

Movement
Calibre 17DM03-TEL
Type Hand-wound mechanical
Diameter 17’’’
Frequency 18,000 vibrations/heure
Power reserve 9 days
Tourbillon 1 minute, double-sided flying tourbillon

Limited edition
60 movements

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.