Mosaic, as you have mentioned the carved creatures, you might be interested in a further extract from the Dutch website that I mentioned:
J. Mendes da Costa designed, among others, the capitals in the form of two back-to-back owlets, stylised pelicans that serve as consoles [or; brackets], and other stylised creatures which can be seen on the façade. Together with the 5 statues, these symbolic representations touch on the themes and motifs that life insurance companies used in their advertising: the vicissitudes of life; and the possibility of insuring the individual against the financial consequences of bad times.
The building is a national monument.
The shops at ground level were originally rented out to a firm called Dake, whose name can even now just be discerned in the granite on the corner.