I've seen it before, have brochure with this in (I'll scan and post on here if that's a good idea), I was going to buy one of these to replace the 1984 Corsa before I made the leap and ordered my SBDU framset - and kep the Corsa!
My 1984 Corsa, see Reader's Bikes, has the same early 600 groupset.
A fine bike with good reviews in the mags back in the day.
Roadking.