Yes indeed this D520 (s/n 408 reg : F-ZWVB) was owned by the "Musee de l'Air et de l'Espace" and was based at Bretigny. It was destroyed on 13rd July 1986 at vannes killing its pilot, Commandant Christian Bove.
a few pics of this aircraft :
There are still 4 surviving D520, 2 being on display and two others in Storage.