This is a development of the Mixup Cube idea, but the middle layer is rotated 30 degrees. in this case, the edge cubes are cut in half.
The pattern on the face of the cube reminds me of a Maltese cross.
This form of cross was used by many knightly orders. This eight-pointed cross was a symbol of chastity and 8 knightly virtues.
Awards for courage were also made in the form of this cross. It is also found on the flags and coats of arms of several countries.