It is not going to be a genuine CN250, as those are very rare, but likely a clone of the CN250. The CF and CN share some parts, but I am unsure if the clutch is one of them. A google search shows it has the CN designation, as do many of the 250cc buggies have, but in this case, make sure before you order.
Here is a link with pics showing both from a scooter site.
http://www.thescooterprofessor.probo...om/thread/1542
Edit: On the clutch, I would keep away from the ebay clutches, as they are for the lighter weight scooters. In this case, you pay for quality.