Yeah I saw that too. Same person won the 4D/70 leaflets also.
There's some info on the 4D/80 and 4D/85 on Gerhard Lenerz site:
http://www.sgistuff.net/hardware/system ... ional.html
I guess it's a single tower 'Diehard' chassis with the VME backplane of a Professional IRIS inside? It was introduced the same year (1988) as the PowerSeries, so it must have been quickly overtaken by the 4D/210GTX (also single CPU limit, but better specs) and the MP Power Series at the high end.
I have a couple of binders with similar brochures, technical reports and other artifacts (price lists, invoices, warranty contacts). Apparently Ian Mapleson has a good number of them as well. Since people apparently willing to pay big bucks for them, maybe we should scanning this material so that the information is available to computer hobbyists and not just collectors of vintage merch with fat wallets.