You can't necessarily go by the barcode.
There are boxes where the 70 plan is shown and yet contains only a 50.
This is because after there was a rule change, there were still too many 70s boxes and these were then filled with the 50s counting boards.
I also have such a box, on the back of the 70s is shown, but the front is the pöppel shown.
So there is only a 50 inside.
With the German edition it is simple.
There is no age indication on the header page and the game rules are folded, because they are bigger than the box.
With the others, it is difficult, because they have taken everything possible in cardboard boxes.
One could go manyicht after the year.
From how many years is on the box? 10 years or 8 years.
10 years = 1 edition
Rio Grande also had an edition with the river and in the back with the 70 board.
But the river there was only later.