The MANSART is a pretty 35 mm watch, retro and modern at the same time. A subtle stack of angular layers alternately brushed or polished, the MANSART is a contemporary watch that leaves no one indifferent.


The MANSART is a refined 35 mm retro and modern watch at the same time.

Subtle angular poli-brushed layers addition, the MANSART is a contemporary watch that leaves no one indifferent.

The octagonal case includes a dial simplified to the essentials, available with discreet indexes or in a guilloché option. The overall is pure and perfectly balanced. The MANSART engraved with the signatures March LA.B M lines crown is octagonal as the case and inserted on the 4 o'clock case corner.

The stamped date surrounded by a chiseled frame shows very retro white digits printed on a black background, revealing the number 3 in green once a month.

Hands have been simplified to the most simple and elegant shape.

The green skeleton see-thru case-back glass reveals the G100 movement with the March LA.B M lines perforated oscillating mass.

The GRALL model is a signature color of March LA.B. A green dial in the center, superimposed on a green dial with vertical stripes. This gives the watch a modern art deco look, with timeless lines

The MANSART is our most elegant watch made of very refined subtle details.

$1,701.00 USD
Shipping calculated at checkout.


• 34 x 39 mm octagonal 316 L steel case
• Thickness 11mm
• Swiss La Joux-Perret Automatic Movement
• Assembled in France in Besançon
• Around 68 hours of power reserve (ideal for the weekend!)
• Guilloche dial
• Hours, minutes
• Steel needles
• Strap width 20 mm
• Anti-reflective sapphire crystal
• Green skeleton screwed back
• Water resistant to 5 ATM / 50 M
• 2 years warranty


March LA.B designs and assembles its watches in France. The Swiss automatic movements that we fit into our timepieces are assembled from A to Z in France. In complete transparency, we are thus pursuing our watchmaking quest to design watches that are “as French as possible”.


The 20 mm leather straps proposed to be adapted on the MANSART are manufactured in the Franche Comté region. They are systematically lined with green leather and equipped with the "presto" system allowing them to be interchanged in a few seconds and without any special tools.

The steel bracelets equipped with the same “presto” system are an assembly of 7 patiently brushed flat links closed by an ultra-flat and reliable jeweler's buckle for ultimate wearing comfort.


  • Delivery is free from 295€
  • Express (24H) or standard (72H) delivery solutions.


The heart of our watches swings between Los Angeles and Biarritz. Their style between the castles of Mansart and the castle Marmont, between classicism and modernity. This 34 mm shaped watch takes up the octagonal architecture of Place Vendôme designed by Jules Hardouin-Mansart, architect of the Sun King. Nobility, majesty, symmetry and balance of forms... The MANSART is its contemporary tribute. Terribly classic, and deliciously modern at the same time.


Franco-Swiss Automatic Movement

The first movement resulting from the partnership between the Swiss manufacture La Joux-Perret and the Bisontine family house Humbert-Droz, the G100 is a new three-hand automatic caliber with date, endowed with a fine 68-hour power reserve and a proven architecture.

This ultra-precise movement equipped with 24 jewels measuring 24.6 mm x 4.45 mm develops a frequency of 4 Hz and 28,800 vibrations.

Equipped with a Stop Second, it is extremely precise varying between - 4 and + 6 seconds per day and offers a power reserve of 68 hours more commonly called "Weekend proof" allowing the watch to operate from Friday evening to Monday morning without it being carried by its lucky owner.

March LA.B positions itself as a pioneer of “watchmaking responsibility” with the desire to bring together skills and join forces for a movement 100% machined in Switzerland and 100% assembled in France.


March LA.B's "Green Thread" is an omnipresent green signature through subtle details. The number 3 in green on the personalized date stamp recalling the favorite month of the founders of the brand. The green lining of the bracelets topstitched with a bridle stitch in the emblematic green color. The luminous green “skeleton” background on the automatic versions.
The interior of the emerald green travel case…

This "Green Thread" extends this "design grammar" that we have developed in order to identify our timepieces through precise and redundant aesthetic codes: The crown or winder at 4 o'clock and its guillochage of the intertwined lines of the M of the brand, the seventies typography of the date stamp, the dials without numbers with cut-out indexes, the raised and domed glass, the ubiquitous angles on the cases that are always polished and brushed.

All of these aesthetic and chromatic details to be discovered in intimacy shape the common thread of March LA.B which leads straight to the heart.