Thanks Ken, this is very insightful!
I will wait a couple of days and pray that the bass doesnt sell. I will offer the owner a lower price. If he lower of a couple grand I could buy it and I think that at that price it will be impossible to beat in term of sound regardless of the origin. Of course after a trip to a local luthier and my teacher (very good orchestra player) to be 100 % sure.
If I end up with this bass (I cross my fingers) I will investigate further the origin ( with your help I hope
).
Francis