I love it!
Well, I'm looking for another reference, but which came with a similar case, the Ref E 861 ( Cal 825 ), whose picture is on the Concoerd ad.
This is a strong looking watch, very representative of the 70ies Design.
The GT symbol mlade me often smile, because some sellers believed that GT stands for " Grand Tourisme " when it stands for " Grande Taille "...
Anyway, my friend, your collection is really appealing.
Huge congrats!
Best,
Nicolas