The culture of mathematical models has flourished in Europe around the end of the 19th century.
In particular, the Brill-Schilling manufacture in Darmstadt (Martin Schilling took over the
distribution of models from Ludwig Brill in about 1900.
The Harvard Mathematics department had a
larger collection which then has
partly been catalogued by
the Harvard graduate school of design.
Alexander Wilhelm von Brill(Bio),
the one from "Brill Noether theory" and was a student of Clebsch (the "Clebsch-Gordan one").
Among students who took his classes ere Hurwitz, Planck, Bianchi, Runge, Ricci-Curbastro,
which all are legends "Hurwitz formula, Planck constant, Bianchi identity, Runge-Kutta, Ricci curvature).
Mathematisch-Physikalische Modelle in an exhibit of the technical university München of 1893.
Source: Deutsches Museum, Bildstelle, displayed in the book
"Objets Mathematiques: Musee du temps de Besancon et university de Franbche-Compte.
Click on the picture to get a 1920x1200 desktop version.
Book cover "Objets Mathematiques: Musee du temps de Besancon et university de Franbche-Compte.