Two major trends have determined the work in museums in recent years: digitization and provenance research. Numismatic provenance research is currently mainly carried out by non-numismatists, though. On the one hand, these specialized provenance researchers use methods and sources that numismatists are not very familiar with and therefore may be expected to contribute potentially new insight. On the other hand, provenance researchers often unfortunately reach their limits when trying to classify serially produced objects like coins and medals. In this lecture we propose to shed light on this process.