for history on Heuer check here
TAG Heuer - Wikipedia, the free encyclopedia
There are several really good Heuer sites namely On the Dash & Heuerville where Stewart does some stunning pics.
I see you are in Southport which is not far from me but also the home of Mike Wood who is the most knowledgeable Rolex guru in the UK
Its a minefield out there so if anyone wants any Heuer answers please fire away