I'm pretty sure that we have talked about this guitr on Jemsite before.
It was build by Emerald guitars in a bid to increase their popularity and bring them fame and more business.
I know that Emerald guitars is based in the UK, but don't know anything else about them.
Also about this guitar...........they saw the cover of Ultra Zone, contacted Steve to find out if he actually has a guitar like that, he (or most probably Rich Pike) told them that he doesn't have a guitar like that and they asked him wheather he will be interested to have one build for him.
After that they build one and flew over to CA couple of times to show him scetches, models and half working prototypes and then gave him a real one.
I'm not sure what happened to that guitar, but it's not on VAI.com so methinks that they presented it to him somewheare at a function, and he just left it there.
There is a head on the neck but no tuning machines on it and the bridge does apear to be stainberger(trans-trem or something to that effect) trem.
For more info, search for emerald guitars here or in google.