: Just happened to pass by this forum..

: A question: when is the 1st Heuer watch fitted
: with sapphire crystal and what model is it?

difficult to say but it was one of the following: 1000M divers with one piece case, 3000 series, airline series, titanium series or the executive series. all seem to have the same release date of 1985. just to clarify, the 2000 series had mineral glass at first, so it was not that series.

if anyone can work out what was released first then you have your answer.