The System is a perfectly normal System, and it's version number is accessible just as for the later Systems - and reports as 0.85. The Finder is also on the disk, but named RealFinder and has only minor changes from a true standalone Finder (e.g. a "Quit" menu that can be fairly easily hacked away). A google search for "System 0.85" will bring up, among other things, my page discussing this at http://school.anhb.uwa.edu.au/personalpages/kwessen/web/stories/EarlyMacStories.html#system085.

Ken