My heart skipped a beat when my eyes landed on these, the likes of which I've never seen--and what could make me happier than geometric solids in miniature form?! And in a lovely 19th century slide lid box with fat dovetailed joints to boot? Plus provenance: a slip enclosed indicating they came from the estate of Doctor of Philosophy Kurt Bonstedt, a consultant in technical chemistry, with two addresses listed for him in Germany.
I have not counted all of the sides on all of the forms, but there are a range of many very many faceted ones! Twenty one forms in total, each with a number printed on it--which indicate they are what was once part of larger set of at least 32.