used on the RTF 2008 tour and you can see
HERE!!
This bass, as other's made for him have particular specifications as Mica said:
On Stan's personal basses the body is thicker at 1.79 inches and the accent laminates are also thicker at .25 inches. This is the same for the Vermilion bass you posted a link to and for the Coco Bolo bass you posted pictures of later.
Vermillon bass!! Stanley's basses have one truss rod because the first ones he had only had one and he's very traditional. Notice his bass pickup is very close to the end of the fingerboard. Again, the first basses we made for him were done like this, and had no truss rod cover, so we still follow this tradition.
Another practical reason for a single truss rod in Stanley's basses is that his fingerboard dimensions are very narrow and the neck is carved very thin. A dual truss rod simply doesn't fit in this configuration.