French case metal suppliers


#1

Please, help me to decide following situation.

At the beautifull web 8lebel.org/index.php?option= … Itemid=759
there are mentioned two metal suppliers with code V:

  • Société anonyme des fonderies et laminoirs de Biache Saint-Waast (Pas de Calais)

and

  • Les fils de Victor Bidault & cie à Vitry-sur-Seine

How we can tell one from the other at the case headstamps? May be they work at different times?


#2

The correct metal supplier code for Les fils de Victor Bidault & cie à Vitry-sur-Seine is BD (see higher in the list). Some times it appears as BDV in documentation, so in my opinion a possible transcription error.


#3

Thank you very much!