I did look through the spec pages but couldn't find it but I have now found this excellent website and my bike is exactly the same as this one at the top. Can't believe I didn't find this website before and it's the only site that has shown the same paint scheme as my bike. I am only the second owner since August 1991 when it was first registered in the uk. I had a mot history check carried out on it and the mileage seems genuine. It's more fun to ride than my 916sps
http://www.motorcyclespecs.co.za/model/Honda/honda_nsr250sp%2090.htm