I believe it might be Kollmar & Jourdan -- Pforzheim, Germany
Rating
Bails & Findings On Jewelry by: Anonymous
Good Morning Elizabeth
I am sorry, but really - "it might" and "it could be" and "I think" when it comes to hallmark determination doesn't mean very much. The image isn't clear of the mark. It would also help a lot if we could see the pendant. We would then have a platform on which to conduct any further research.
Elizabeth, do you know for certain this bail is the original to pendant? How do you know? Because the seller told you so? And then again, does it really matter if you find out who made the finding? For instance, anyone could put a Mikimoto clasp on a strand of pearls and say - MIKIMOTO!