In the collections of the National Museum in Kraków, two works by Wolfgang Prenner (active 1637–1677), who came to Kraków from Styria, are particularly important. In 1637, he was entered into the registers of the municipal law and guild, and the following year, he obtained the position of the city’s clocksmith. At the request of the Cracovian chapter, he supervised the tower clock in the Wawel Cathedral, and among others, he undertook its major repair twice. The tabletop clock on display dates back to around 1670. **For more images and further information, visit:** https://muzea.malopolska.pl/en/objects-list/2435 Inventory number: MNK IV-Zeg-11 Localisation of the physical object: National Museum in Kraków, Poland **Digitalisation: Regional Digitalisation Lab, Małopolska Institute of Culture in Kraków, Poland; “Virtual Museums of Małopolska” project**