Vacheron Constantin 81578/000G original open mold Cal.4400AS manual mechanical movement men's watch

Vacheron Constantin 81578/000G, 40 mm diameter, men Original open mold Cal.4400AS manual mechanical movement Vibration frequency: 28800 oscillations per hour Power reserve: 65 hours Table diameter: 40 mm Case thickness: 8.3 mm Waterproof depth: 100 meters