This short contribution discusses a previously unpublished copper artwork attributed to Giovanni Francesco Barbieri, commonly known as il Guercino. It sheds light on a commission by Don Antonio Ruffo, an international art collector from far off Sicily. This particular work holds immense significance in the intricate relationship between both artist and buyer. This is clear from an extensive collection of documents, some of which are partially transcribed here, focusing specifically on copperwork. The artwork in question is accompanied by others, discussed in brief paper. These include a previously ambiguously attributed drawing. This critical clarification serves to enrich our understanding of the artist’s until now only vaguely catalogued body of work, providing an insight into aspects of art collection and a history of restoration.