I have a variant of this poster that was sold through Primus' website. The only differences between this one and mine are:
The Incubus and Buckethead text does not appear
There is no jesus fish on the tightrope walkers ring.
And the date and venue name are replaced with the words "Club Bastardo".
It's a great poster with a lot of metallic silver ink, and was signed and numbered in an edition of 500. I know this is all very interesting for you.