 The books also shed some light on the size of the collection, which encompassed over 10,000 Roman coins and about 4,500 other Roman antiquities.Eventually the collection was sold to Johann Wilhelm, Elector Palatine and moved to Düsseldorf.Only the few pieces that were donated to the city of Nijmegen are left of the collection, as the sold majority dispersed over time and its contents are now untraceable.