The main challenge behind this timepiece was to answer the question of what an AdCS plit-seconds chronograph would be like. We created a completely new fancy organic and ergonomic case made in 18k Grey gold with teardrop lugs, designed an amazing Pulsations black galvanic “gilt” dial and for the calibre we used a vintage Venus 185 as a base.

Grand Prix d'horlogerie de Genéve 2020

Finalist Chronograph category, Grand Prix d’Horlogerie de Genève 2020.

AdC8 Atelier de Chronometrie
AdC8 Atelier de Chronometrie


In order to make the case look thinner, we combined a center part curved with a convace bezel and case back. The organic teadrop lugs, inspired by the vintage chronographs, gave more personality to the whole watch aesthetic. The design of the crown with the rattrapante pusher and the pushers were executed in order to not protrude excessively from the case profile.


The idea of creating a medical dial with a pulsometric scale appealed to us. We designed it in different color versions but the forcefulness of the black galvanic gilt with mirror polished silvered lettering and scales version was determinant for the final choice. The applied Breguet numerals and three engine-turned counters combined perfectly with the 7 leaf hands made in 18k Grey gold.

AdC8 Atelier de Chronometrie
AdC8 Atelier de Chronometrie


Balanced mixture thanks to the combination of the pink gold plated bridges with the rodhium plated wheels and the steel accents of the levers and black polished parts as well the purple black polished beveled screws. At the center, a new rattrapante wheel made of Titanium with the AdC symbol.


A unique bracelet especially designed and handcratfted in 18k Grey gold. The tear drop shape of the lugs became the key visual and we transformed it into the best accessorize for such a rattrapante chronograph.

AdC8 Atelier de Chronometrie

More details

  • Calibre 8, Venus 185 ébauche.
  • Movement based on a Venus 185.
  • 50 new parts have been created completely by hand.
  • The rest of the parts have been modified and decorated by hand too.
  • Manual winding.
  • 23 jewels.
  • Power reserve 36 hours.
  • Frequency 18.000 b.p.h.
  • 3 bridges made in Arcap with grainage finish, 18k pink gold plated, polished countersinks, anglage, etirages des flancs and purple black polished beveled screws.
  • Free sprung balance regulated by 6 masselottes made in 18k rose gold with a black polished stud holder plate.
  • Anchor bridge made of steel, black polished, polished countesinks and anglage.
  • Purple black polished beveled screws.
  • Rattrapante bridge made of steel with 18k pink gold chaton with black polished countersinks, anglage and beveled screws.
  • Rattrapante wheel made of Titanium with the AdC symbol shape.
  • Hand-engraved number 8 satined finish.
  • Levers decorated with anglage, polished countersinks and straight graining.
  • Wheels rohdium plated and decorated with anglage and circular satin finished.
  • Finishes: grainage, black polish, anglage, perlage, polished countersinks, straight graining, etirage des flancs, etc.
  • Pulsometric black galvanic “gilt” dial with mirror polished silvered lettering and scales and applied Breguet numerals and 3 engine turned sub-seconds.
  • Handmade 18k Grey gold leaf 7 hands.
  • 39’8 mm three-body case in18k Grey gold with concave bezel and case back and teardrop lugs with high polish finishes.
  • Handmade 18k Grey gold rattrapante crown and 2 pushers.
  • Dimensions: 39’8mm and 20mm lugs and 14,3mm height.
  • Handmade 18k Grey gold buckle.
  • Handmade leather strap.
  • Handmade 18k Grey gold bracelet.
  • Sapphire glass front and back.