Chiming in for provenance: 'twas me who passed on this bass to soggs on this here forum. One of the few custom Kubicki in Europe, if any other. Should have kept it (well, you know how it is). Hen's teeth indeed.
Now that only two are left, this thread will be retired soon.
If you've been toying with the idea of snapping up the Hanewinckel or the Acacia, this may be your chance.