The Unique Piece, L. Leroy “Tourbillon Régulateur Skeleton Art Deco”, pays homage to this famous movement of the 20th century


L.Leroy, founded in Paris in 1785 under Charles Leroy, is one of the most illustrious names that have written some of the finest chapters in the history of French watchmaking and chronometry, developing for over two centuries of technical and inventive treasures.

This human, artistic and industrial adventure is marked by illustrious names such as Marie-Antoinette, Proust, Matisse, Napoleon, Queen Victoria, Roosevelt, Chopin, Nobel, Bugatti, aviation pioneers Charles Lindbergh and Santos-Dumont, to name just a few owners of a watch signed L.Leroy.

Official Watchmaker to the French Navy, L.Leroy has left an indelible mark on the history of precision and the excellence of its production is confirmed by the 384 gold medals won in chronometry competitions, a total that remains to be seen. this day an absolute record.

In 1900, L.Leroy won first prize at the Universal Exhibition in Paris with the “Leroy 01”, a true horological masterpiece with no less than 25 complications, which would retain the title of the most complicated watch in the world until ‘in 1989.

And the story continues in the 21st century with many other extraordinary watches. Today, the company is based in Switzerland, at Les Reussilles in the Jura Valley, and continues to produce exceptional works of art that maintain a strong link with its prestigious French heritage, both in terms of innovative technique and refined style. .


The unique piece “Tourbillon Régulateur Skeleton Art Deco”, is a clear example of a time instrument that embodies the DNA of the brand. For this creation, L.Leroy combines the cutting-edge technology of its fascinating tourbillon complication with the traditional art of “skeletonizing”, two skills in which it excels.

The “Tourbillon Régulateur Skeleton Art Déco” features a skilfully handcrafted openwork decoration, reminiscent of the original Art Deco style, whose graphic lines refer to the artistic movement of the beginning of the last century. Once again, L.Leroy demonstrates its great mastery of fine watchmaking, the fruit of more than 230 years of history. The 41 mm case, crafted in 18-carat rose gold, is embellished on the middle with a superposition of engraved triangles. Precision punctuates the dial with a series of symmetrical, repetitive and finely executed openings which invade the space creating a mirror effect between the tourbillon carriage at 12 o’clock and the main hour display positioned at 6 o’clock, while the minutes are indicated by a long central blued hand. This way of arranging the main time reading is known as a “regulator” watch.

The term “regulator” comes from the master clock used by watchmaking workshops to make the final adjustments to watches before delivering them to customers. To simplify the comparison of indications between the watch and the master clock, the latter generally displayed the hours, minutes and seconds separately. Historical supplier of most national observatories in the world since the end of the 19th century, L.Leroy has produced a large number of these time-measuring machines intended for various scientific and industrial uses. Recognized as the pioneer of modern chronometry, the regulator associated with the tourbillon complication could not be missing from the contemporary collection of L.Leroy.

The skeleton motif allows enthusiasts and collectors alike to delve into the very heart of the watch and appreciate this complicated, finely polished, bevelled and decorated movement. The same level of finish is also visible on the case back, which displays a precious openworked oscillating weight bearing the interlaced initials of the logo (LL).

Such a beautiful work of art is driven by a self-winding flying tourbillon regulator movement that is highlighted by its entirely hand-cut motif. Each component of the caliber is patiently carved by hand with a small handsaw, filed and chamfered. Very few artists still hold the secret of this art and we can count them on the fingers of one hand. Just for the manual cutting of the parts, without assembly or adjustments, each movement requires nearly two months of work. With the manufacture of the movement and the dressing, this timepiece required around six months of work.

This unique piece is part of the Osmior collection (this name derives from an old metal alloy composed mainly of gold of a color close to platinum, used by the House for the cases of its Grandes Complications pieces) and is completed by a Bracelet in genuine alligator with 4n rose gold pin buckle, personalized with the L.Leroy logo.

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