Brand Zenith Model (Watch) El Primero Chronograph Reference number 01.0040.400 Winding Automatic Case material Steel Strap material Year of manufacture 1980 (Approximate year) Condition Used (Excellent) The item shows signs of slight wear and tear, such as light scratches, but not perceptible to the touch. Last serviced 21 November 2024 Internal overhaul Original box set , no original papers Winding Automatic Case Material Steel Diameter 40 mm Bezel Material Steel Glass Plexiglas Dial Black Dial No numbers - AUCTION COMMISSION 25%