he actualy means the grey box,,, what most of us call a mk1,,,,,, however the mk1 box had about 5 upgrades , so there are grey mk1 boxes that when you take the cover off, say mk2 , mk3 ect.
there is of course the new mk3 carrot shape,,, but a year or so befor its reelease there was a mk2 carrot shape,,,, but it was discontinued cos it was crap.
hope thats not to confusing
Cheers Tomo.
So it's a mk2 version of the old grey mk1 box.
More correct is it's an old grey mk1 box with a mk2 variant of the wheel.