The speed master with the real thing in the daze of youth:
So now we know where those TBird pups came from - he probably broke his TBird whilst colliding with Stacia, always one of the more focal points of Hawkwind.
He could also be playing an EB in the official Silver Machine vid, it's hard to tell.
Alternatively it's that unknown brand SG type bass (later on also with apparently TBird pups, but not on this pic) he handled for a while.
Other Hawkwind bass players certainly did play Gibson EBs.