Edgeworn at the rim, otherwise good state of preservation.
On the back engraving "Jgn. Nowicki Ingénieur à Lipowetz."
Ignatius Nowicki was a member of the Belgian Geological, Paleontological and Hydrological Society. The Lipowetz mentioned on the medal is most likely Lipovets in Vinnytsia County (now Ukraine).
Gilded medal, diameter 63.5 mm, weight 78.58 g