http://www.abc.se/home/m10901/RAIL/osj_klot.html
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SUBLIMITETSAKADEMIEN
http://mac.abc.se/~pictor/
According to Mathworld, it's a "small rhombicuboctahedron":
http://mathworld.wolfram.com/SmallRhombicuboctahedron.html
It's one of the Archimedian Solids:
http://mathworld.wolfram.com/ArchimedeanSolid.html