Acronym ...
Name 2quith (?)
Circumradius sqrt[7-4 sqrt(2)]/2 = 0.579471
Vertex figure 2[6/2,8/3,8/3]
Coordinates ((sqrt(2)-1)/2, (sqrt(2)-1)/2, 1/2)   & all permutations, all changes of sign
General of army sirco
Colonel of regiment quith
Confer
non-Grünbaumian master:
quith  

Looks like a compound of 2 quasitruncated hexahedra (quith), and indeed vertices, edges, and {8/3} all coincide by pairs.


Incidence matrix according to Dynkin symbol

x4/3x4/3x3/2*a

.   .   .      | 48 |  1  1  1 | 1 1 1
---------------+----+----------+------
x   .   .      |  2 | 24  *  * | 1 1 0
.   x   .      |  2 |  * 24  * | 1 0 1
.   .   x      |  2 |  *  * 24 | 0 1 1
---------------+----+----------+------
x4/3x   .      |  8 |  4  4  0 | 6 * *
x   .   x3/2*a |  6 |  3  0  3 | * 8 *
.   x4/3x      |  8 |  0  4  4 | * * 6

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