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
aye yor right its the box type with mk2 marked on the wheel will the new type last as long