This cut and folded tan paper model has twenty equilateral triangles for faces.
A paper tag reads: 405. A mark in pencil reads: Jan-12-1932 (/) No. 405.
According to Wheeler's catalog, it can be transformed into a rhombic dodecahedron.
A. H. Wheeler, Catalog of Models. A. H. Wheeler Papers, Mathematics Collections, National Museum of American History.
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