Independent Watchmakers · 2026-04-12
Atelier de Chronométrie closes its split-seconds trilogy with the AdC99
A 39mm grey-gold rattrapante pairs a two-tone salmon dial with a comprehensively rebuilt Venus 185 architecture.
By Chronolume digest · Original English summary · Based on Atelier de Chronométrie
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What to know
Atelier de Chronométrie presents the AdC99 as its third and final split-seconds chronograph. The unique piece uses a 39mm three-part case with teardrop lugs and a matching handmade bracelet, all in 18k grey gold. Its two-tone salmon galvanic dial carries applied Breguet numerals, three engine-turned registers and seven handmade hands in grey gold and blued steel.
Inside, the hand-wound Calibre 99 starts from a Venus 185 ébauche but receives redesigned components, handmade Arcap bridges and extensive traditional finishing. The 26-jewel movement runs at 18,000 vibrations per hour and offers a stated 49-hour power reserve. A titanium rattrapante wheel, free-sprung copper-beryllium balance and rose-gold masselottes underline how far this one-off commission departs from a simple restoration.