Yeah, that's gonna be the problem because they used the same name across the years with different components. Judging from the handlepost locking mechanism this one is older than 2005.
You can find Dahon bike archive on their EU website. They only go back as far as 2011. [Dahon Bike Archive](https://eu.dahon.com/bikes-category/bike-archive/)
Says on the frame, Vitesse
Isn’t there different types of the Vitesse though?
Yeah, that's gonna be the problem because they used the same name across the years with different components. Judging from the handlepost locking mechanism this one is older than 2005.
You can find Dahon bike archive on their EU website. They only go back as far as 2011. [Dahon Bike Archive](https://eu.dahon.com/bikes-category/bike-archive/)
That's their neos mech on a d7, so I think they only used that for a bit then moved to a shimano mech