Max Bruckner 1906 polyhedra & icosahedron models

The complete icosahedron, with irregular faces, was first studied in 1900 by Max Bruckner. He extended the stellation theory beyond regular forms, and identified ten stellations of the icosahedron, including the complete stellation.

From the book:
Uber die gleichecking-gleichflachigen, diskontinuierlichen und nichtkonvexen Polyheder.
von Prof. Dr. Max Bruckner. Oberlehrer am Gymnasium zu Bautzen
Halle. 1906.

Polyhedra

Icosahedron