Convex SPP(3?) .... Worth saving?

Hey guys... I have a line on a Convex machine. The current owner is a guy who attends Govt. auctions and buys bulk, then scraps out stuff for gold/parts/etc... He calls me when he finds anything interesting, so... He says this is a Convex SPP3. (it's _heavy_... around 400 Lbs.) I haven't seen it yet, so I don't know anything more right now. Unfortunately, I have no knowledge of Convex stuff, and a web search turned up some Convex SPP stuff, but not much, and _nothing_ on an "SPP3". Can anyone enlighten me further? (Yep, I know it's an SMP architecture of some sort, but little more than that). A couple of questions... Is this machine historically significant? (I.e. worth saving?) Does anyone know of a source for documentation? (I've done a prelim. web/newsgroup search, but haven't turned anything up) Does anyone have (or know where I can find) a copy of an OS for it (apparently it's a unix variant. He told me that the disks were missing... not unusual for an auction item) 400 lbs is a bit large for me, but if there is a remote chance I can bring this critter back to life (and it's worth saving) it's probably worth the effort. I'll going to try to take a look at it and try to get some sort of model#/ident. Anything I should be looking out for or wary of? -al- -acorda(a)1bigred.com