Well it's a 1999 shape, but the fairing colours don't look quite right to me. Maybe they are aftermarket ones? Or maybe the owner had decided to make some "improvements".
If you compare to the link below...
The tail is most obvious, as the end should be white. Also, the tank should have white Honda wings and purple flashes on it. The front mudguard has red side pods when they should be white. Finally, the HONDA text at the very bottom of the bike doesn't seem right to me. If you look at the link, the fairing screw just comes in to the top part of the O. ON the pics you've posted, the screw is aligned with the corner of the N.
It also has aftermarket front indicators and the number plate hanger has been butchered, but these may or may not be an issue for you.
At first glance it looks OK, but I suspect it has aftermarket fairings on it. I've never seen/used any of them myself, but I suspect the quality would not be as good as OE.
If they are aftermarket, ask yourself why. Possibly because it's been down the road?
None of this necessarily means it is a bad bike, but if I am correct, IMHO it would not be worth anywhere near as much as an original example.