Thats what they are. Custom made. Takes at least 6 months to make and everything hand made in house except the tuners. Plus unique.
I've had 6 of his guitars, 1 baritone and 2 basses and they are wonderful in looks, feel and sound. Unfortunately finances etc etc. All but 2 of the guitars have gone (I don't play guitar anymore so couldn't justify having them around) and this bass. I wish I didn't have to but ...............