Photo caption: "Two dodecahedra and an icosahedron on display in the Rheinisches Landesmuseum Bonn, Germany."
A Roman dodecahedron or Gallo-Roman dodecahedron is a small hollow object made of copper alloy which has been cast into a regular dodecahedral shape: twelve flat pentagonal faces, each face having a circular hole of varying diameter in the middle, the holes connecting to the hollow center. Roman dodecahedra date from the 2nd to 4th centuries AD and their purpose remains unknown. They rarely show signs of wear, and do not have any inscribed numbers or letters.
the holes seems designed to fit on a cone, the nodes for string since they are undercut
below has further in-depth speculation, suggests game or calendar and rules out several guesses
https://tinkerings.org/2020/06/17/roman-dodecahedrons-part-i/
https://tinkerings.org/2020/06/17/roman-dodecahedrons-part-ii/
https://tinkerings.org/2020/12/25/roman-dodecahedrons-part-iii/
https://tinkerings.org/2020/12/25/roman-dodecahedrons-part-iv/
an icosahedron has 30 edges (days?) and 12 faces (months?)
Wrong, I already told you it's for measuring spaghetti servings. The little nubs are to keep it off the hot surface of the stove.
Timecube but it’s real