Screw medal : "Historia in Nuce"

Full title: "Historia in Nuce, das ist Kleine Bilder von den grossen Thaten Friderichs des Grossen Koeniges in Preussen in Dreye Schlesische Kriegen".
The screw medal is an opening medal fitted with a thread, allowing the object to be split into two parts, which contains a collection of engravings on paper placed inside. This rare work of 18th-century art and engraving craftsmanship was intended to commemorate the glory of Prussian King Frederick II as the victor in the Silesian Wars (1740–1763). The medal is part of the Silesian collection, donated to the Ossolineum by Tomasz Niewodniczański in 2002. On its obverse the screw medal bears a portrait of Frederick the Great with an inscription in the rim: Fridericus Magnus Rex Borussorum. On the reverse are personifications of life and death (a winged seated woman writing in an open book and a winged old man with a scythe). Inside the medal, glued on the back of the obverse and the reverse are copperplate engravings with a map of Silesia and a legend with letter abbreviations. The medal contains 39 round engravings connected in the form of a leporello album with views of cities and battles from the Silesian Wars.