is it the 1953 DB "tank"?
Technically I was wrong when I said it was a Panhard base, because actually only the engine is Panhard; in fact the base is DB, but not the Tank.
I think perhaps you've found enough out to have a 24-hour lock to see if you can find out who built this car and about when (not sure exactly myself..)
Devin-Panhard ?
No, sorry - nothing to do with Devin.