The number I once read was 600, but that is probably too much though I think 100 is too low, more like 200-300. They do crop up in the strangest place, i.e. Australia, Germany (where it got a glowing review comparatively recently as a "cult bass" and "the ergonomically best engineered paddle bass") and Italy which speaks for the fact that they were made in a number not just sucked up by the US market.
In any case, there is only one person on earth mad enough to own two!