Hi Jorge, and welcome!
We kinda have a good news/bad news situation on this front...
The good news is that TAG-Heuer has a site of their own and since it's their site it's official... The bad news is that it really only covers current models with precious little historical information, and frankly there isn't really much else out on the net. For us it's nice having a wide open frontier to populate, however the rub is that there is no one else who can assist when we don't have the answers.
What I can tell you though is we do have some TAG-Heuer catalogs that I'm planning on scanning in so that we can refer to them. In the meantime, if you could post a picture, discription, preferably with case reference numbers here in the forum, I can't promise that we'll have the information, but I'll try to see if I can find a picture in what catalogs I have and if nothing else try to express what little I know.
I wish I had better news, but let's see what we can put together.
-- Chuck