Bernardel Plumerel - ex David Walter

[Gautier Blondel]

Dear all,
A few months ago, I bougth a french bass which was made for Achille Gouffé in 1841.
There is the signature of Bernardel on a rib, and there is inside the bass the signature of Plumerel.
It seems that this bass belonged to David Walter, who was teaching in Juilliard School.

This is not a Bernardel shape, it looks more italian.
The varnish is not original and I can't imagine why a luthier put a new varnish.

I imagine that many bass players in USA knew David Walter and I would be happy to learn about him and this bass, if someone knew this bass...
Thanks a lot