There may be more arguments besides the map. Each object has 12 sides, so 12 holes. For hundreds of exemplars thats thousands of holes. The holes are described

There may be more arguments besides the map. Each object has 12 sides, so 12 holes. For hundreds of exemplars thats thousands of holes. The holes are described as having different sizes on the same dodecahedron. For being an object of mystery, one would assume a catalog of features to have been constructed, but I am not aware of any. I believe they were used to test coin sizes (could be used by both scrapers and verifiers), see my comment at https://news.ycombinator.com/item?id=35946841 https://news.ycombinator.com/item?id=35946841 Such a hypothesis should be testable: catalog the hundreds of dodecahedra, one row per item, and 12 columns for the radii. Collect all occurring thousands of radii and sort, and observe density peaks and compare age of item and coins of era with radii.