Rattle from front area of DB9

[graphen]

While driving at city speeds there is a rattle (sounds kind of like a coin vibration) which seems to come from the front area of my '05 DB9. The sound is not related to the selected gear or the car's speed (although I've never heard it at highway speeds) and occurs regularly about every 10 or 15 minutes.

Any ideas???

video & sound link
https://www.youtube.com/watch?v=DWfvV5owPRo

Edited by graphen on Sunday 3rd May 13:42

[SLacKer]

Listened several times and can't hear anything out of the ordinary.

[Gdc]

Usually the sat nav housing on the dash in my experience