Strange. i am no expert in Tabu, but the bottle doesn't seem like the current ones, the design seem somewhat older.
And your description doesn't quite fit. Tabu has changed from vintage, but, at least here in the US, it is still recognizable, if much simpler and far less rich. It is a big, dark oriental, with spices and resins, and, in vintage, plenty of animalics. Current is simpler, but still dark, and with more prominent patchouli. Also, Tabu was famously very dark in color, and it stained. Here in the US, the color is still darkish.
So who knows. perhaps in Europe a different version has circulated, or perhaps it was a very light concentration. Perfumes came in different concentration, and the most intense and richest was the parfum concentration.