W124 beards - is this an OBC?

[Hammerhead]

On a recent trip to Mercedes Welt, Stuttgart, I happened upon one of their retail classic W124s and having a nosey through the glass, noticed this computer/OBC/check systems thingy. I've never seen one in a UK car before. Does anyone of the W124 beardship know anything about it/its functions?

[Hammerhead]

Excellent stuff, r129sl. Very informative. I quite like the rev counters position & size in that cluster, though the OBC looks, well, clunky next to the other simple but effective dials. The UK cluster looks better overall.