Gold Chronograph Watch no. Unknown

Case: Dial: Movement: Provenance: 19?? - Haas Neveux, Geneve 2018 - William H. Bunch auction, 25 Sep 2018, USA, "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"