Huguenin-Berthoud, Les Ponts de Martel, Case No. 12169, 53 mm, 117 g, circa 1878

A gentleman's pocket watch with an extraordinary chronograph mechanism
Case: 18k rose gold, polished, à goutte, monogrammed, glazed movement, large lateral hinge. Dial: enamel, Roman hours, Arabic minutes, blued Breguet hands. Movm.: bridge movement, nickel-plated, stripe-decorated, extraordinary early chronograph mechanism with pivoted drive and star wheel connected to the escape wheel, wolfteeth winding wheels, club-tooth lever escapement, screw compensation balance.