Heuer Autavia GMT 2446C

Heuer: A Stainless Steel GMT Chronograph Wristwatch, signed Heuer, model: Autavia GMT, ref: 2446C, 1960's,

(calibre Valjoux 724) manual wound lever movement signed , column wheel chronograph, black dial with luminous baton markers, three silvered dials for seconds, 30 minute and 12 hour registers, outer fifth of seconds track, case with buttons in the band to operate the chronograph, sliding 24 hour red/blue "pepsi" bezel with a corresponding central red 24 hour hand, snap-on back stamped inside 40mm wide