Well to be honest, I do not know which is why I asked. What made me think it might be? Well you will notice in the on the pic of the serial number of the motherboard it says "PRIMUS" is this the code word used for this unit? I honestly don't know. Also the ROMs (They are the rams right?) have stickers over them that say "Hi" and "low" on them.. None of my machines have any of this (I have two other LC 475 and Performa 475 that do not say either one of these) also there is a guy on Ebay selling a Quadra 605 that doesn't say "Primus" on it.
Now those are just the cosmetics that make me wonder. Profile says serial number is UNKNOWN, Model UNKNOWN. Is there another until I should be able to use on this machine that might be able to detect these things.
Did I mention I got this form a Recycling place with a bunch of computer had I have gotten prototype machines from them in the past.
Right now I have a prototype of AppleWorkGroup Server Proto because it's in all black box and it's very very heavy. I wish I am able to test it, I don't have the key to the unit so I have no idea how to turn on the unit.

. But that's for another tread..
-Hugh