Subtle question, only a true collector can answer :-)

Ok, so over the weekend I picked up a couple of VAXen. They were both in DEC "BA213" enclosures that were mounted to 19" DEC racks. Neither uses disks that are in the racks, although one used a tape drive that is in its rack. Here's the question, lets say I take all of the cards and move them from the BA213 in the rack, into a BA213 that is in one of the roll around pedestals. Is the system still "original" ? Clearly the only way to tell it isn't the same is that the serial number on the chassis has changed, even though the sticker is the same system type. My take on it is that its still the same if it is the same set of parts in the same configuration as I got them, other views? On a semi-related note, I paid $100 for a 4000/VLC on Ebay (I know, over market, but the thing was "new" in the box. I bid on it on a hunch, and my hunch proved to be accurate, in the original documentation are the license PAKs that go with the system, un-opened, never been used, waiting for the system "buyer" to activate/use. Clearly I can use these (LMF will accept them as valid) but what is the legality question here? DEC sold the system with these licenses to be used on it, and I'm planning on doing so. Further the licenses appear to be "generic" in the sense that they aren't addressed to a particular owner. Comments? --Chuck