Philip, a caravan is always dated by its Model Year.
If built from September 2007 to 2008 it's a 2008MY and if built September 2008 to 2009 it's a 2009MY no matter when it was first sold.
"008MY Eribas are unique in that they were the only Tourings ever produced with a dark wood strip at the top of the roof lockers. If your van doesn't have the dark strip it can't be a 2008MY van.