This rare vintage Autavia (Auto-Aviation) GMT ref. 2446 is a symbol of Heuer's unique relationship between the motor-sport and aviation industries. Featuring a high grade manual-wind Valjoux 724 movement (based on the cal. 72 featured in the early Rolex Daytonas) with both chronograph, and dual-time zone indication. Red and blue 'Pepsi bezel'. The matt black dial is in beautiful original condition, with ivory luminous markers and contrasting silvered subsidiary dials. Guaranteed by Watch Club for 2 years.