Probably W.A. Froger's maquette of the bank building was made in 1915 on the occasion of a closed competition for a new main building in 1915. The management of De Nederlandsche Bank ordered that Froger's bank building be made in the same scale (1:100) as the models submitted for the competition so that they could be compared. The model is tinted brown and, in keeping with the executed design, shows a kink in the building line.