Hi,
Clavi you're right this watch did not exist historically.
But AFAIK the calibre cased in the 80s was not a triple date but a perpetual calendar!
I would love to see such a watch come back, but I doubt it could happen as they have still not sold all the 500 pink gold perpetual calendar GT Reverso watches of the 90s.
Pehaps someday we'll see an 8 days XGT perpetual calendar, a more probable option IMO.
Dje