BAUME & MERCIER CHRONOGRAPH Reference: 3902. Serial number: 124008. Case in 18k yellow gold. Light grey dial, highlighted by three counters (seconds, minute totalizer, hour totalizer). Hand-wound mechanical movement (calibre 72C). Leather strap with pin buckle. Plexiglas crystal. Circa 1950. Diameter: 37 mm. Gross weight: 42.1 g. An 18k gold wristwatch mechanical movement, by Baume & Mercier. Circa 1950. RC: Sold as is, traces of wear and use. Movement functional at time of writing, no warranty.