Heuer, a gentleman's stainless steel Autavia automatic calendar chronograph wristwatch, 1970's,

细节
Heuer, a gentleman's stainless steel Autavia automatic calendar chronograph wristwatch, 1970's,
black dial with luminous baton five minute markers, date aperture at 6, subsidiary minute and hour recording dials, self-winding movement, case with black revolving bezel, screw back, diameter of bezel 40mm.