Gold Chronograph Watch no. 2389

Case: Yellow gold, hinged cuvette signed "Mi, Chronometer, Chronographe Compteur, Maison B. Haas Jeune, Brevetee, Geneve Paris" Dial: Movement: Gilt brass, bi-metallic balance with blued steel balance spring with square polished steel kidney piece, pin set Provenance: 18?? - Haas Neveux, Geneve 2018 - William Bunch Auctions, PA, 25 Sep 2018, Estimate $3,000 - $5,000, sold $2,400, "18K YG B Haas Swiss chronometer pocket watch, 42 mm movement, with subsidiary calendar and seconds dials, stop watch function, white enameled dial in excellent condition, cover with engraved monogram, RL, cuvette engraved "CHRONOMETRE / CHRONOGRAPH COMPTEUR / MAISON B HAAS JEUNE / BREVETE / GENEVE PARIS", marked 18K, runs when wound (no warranty on mechanical items), on a 20" YGF chain, unmarked 10K YGF penknife attached"