In the collection of the National Museum in Warsaw there are four small sets, originating from the eastern lands of the former Polish-Lithuanian Commonwealth. They had belonged to the collection of Józef Choynowski and, as a deposit of the Society for the Encouragement of Fine Arts, in 1923 became a part of the Museum’s collection. They represent quite a wide time horizon, dated from the beginning of the 16th century to the half of the 17th century. Their compositions are similar to deposits from the same period, and size allow to determine them as content of purses. The older hoards are homogeneous in nature, while the later ones are more varied, including, among others, many counterfeit coins. The circumstances of their deposition are unknown.

The article presents the interpretation of a coin found in the Kuyavian region, Central Poland a few years ago. According to the most plausible hypothesis, it is a cast barbarian copy of a barbarian imitation of a Roman denarius. In other words, the barbarians most likely made (by casting) a copy of an imitation previously made (presumably struck) by other barbarians using a Roman original as a model. Numerous barbarian copies and barbarian imitations of Roman denarii have been recorded in recent years. However, the author of the presented article is not aware of any cast copies of imitations, therefore, taking into account the current state of research, the artefact described in the article should be considered unique.