New excited owner here!!!

Long story short, I've got a bike back which I used to ride 15 years ago. Couldn't be happier. Plan on riding this thing all the time. I'm lucky living on the North East coast. Its red now but I can see it used to be I think its called Space Blue? I'm gonna strip her down, repaint and get everything back to working order. Not bothered she wont be pristine but that's ok. Quick question. I cant find a serial number anywhere, just curious. Not on the rear hub, frame that I can see. Shes a Mk2 is all I know at this point.

Any advise would be great, thanks 

Steve