A few years ago, an article on Roman folding knives in Denmark would have been unfeasible, as this small and distinct group of artifacts had not yet been identified. However, the increasing use of metal detectors in Denmark has led to the discovery of numerous new artifact types, some readily identifiable and others less so. The identification process of this new type began with the discovery of a complete folding knife in Gl. Rye cast in copper alloy. While initially proposed to be of Roman origin, this attributi…