I have a pair of these with the associated smaller DC clamp boards, they are boxed. They are 12368 Issue 10 PCBs which marks them as a Mk 1. I got these ages ago intending to use them in a project which of course didn't happen. What kind of price are they worth? I can post etc, they are boxed. I'll probably make some sort of charity donation because ISTR they were given to me more or less free as part of another long forgotten deal.