I have got silver tongs (gilt, see the photo).
It is marked as shown below.
The mark to the left (Minerva) indicates the 800/1000 silver and French origin. Unfortunately, it has been used for over 130 years. In order to narrow this period I would have to identify the maker mark (center and to the right, two photos of the same mark: CB letters and something in between). So far I have been unsuccessful. Any help will be greatly appreciated.