How rare is an actual Macintosh Server G4's?

[GearHeadG5]

I was given a Powermac G4 a while ago and when I looked at it, it has the Macintosh Server G4 model number and nameplate on it. How rare are these?
I tried to get another picture uploaded of the nameplate near the I/O but it wouldn't let me upload any pictures of it.

Specs:
400Mhz G4
1GB RAM
ATI Rage 128 Pro 16MB
20GB + 120GB HD's

 

[MisterKeeks]

AFAIK, it isn't worth more than any other G4. The only difference is the plate and serial number, which most people couldn't care less about.

 

[blesscheese]

Does it have a SCSI card in it? I think that may be the only real difference...

 

[GearHeadG5]

It doesn't have a SCSI card, just plain ATA. I just wondered how many of these are around.