Here are the measurements for the board, and for the pieces box:
237 x 237 (board) mm ; 70 x 68 x 15 (box) mm
It is unknown if there was a larger box to hold all; many games at the time were sold without such a box.
An example of this game can is held in The Bodleian Libraries of the University of Oxford.
This board is marked strictly for playing German Tactics, not for Fox & Geese.