For sale is a very lightly worn (2-3 times) Casio G-Shock GMWB5000D-1 steel square. I do not believe this particular version of the watch is available for purchase anymore and it is certainly a desirable unique piece.
The face of the watch is perfect and the only marks I've found on the watch are very faint on the clasp. It comes with full paperwork and extra links - currently sized for ~8" wrist and there are two additional links, so this is definitely a watch that can accommodate some big wrists if necessary.
Asking $450 shipped in the CONUS.