This is a Truncated Sphere D24.
The underlying polyhedron is a deltoidal icositetrahedron.
The numbering proposed here is very classical (opposite faces sum to 25). Furthermore, for a more numerically balanced numbering, if you consider the underlying cube, the 4 numbers of each face of the cube sum to 50 and the 8 numbers of each slice surrounding such a face sum to 100.
A less expensive version is available in Antique Bronze Glossy with an alternative numbering here
Available Truncated Sphere Dice: D4
Alternative shapes: alt D8
, 3-fold D10 (rounded)
, 3-fold D10 (pointed)
, 4-fold D10
, 5-folded D10 (pointed)
Coming soon: D22
Related dice: Concave D4
, Concave D6
, D4 Shell
, D8 Shell