I look this pair of salt shakers was made in Norway, imported to Sweden, help to identify the maker?

[Nata37]

Hello.
I look this pair of salt shakers was made in Norway, imported to Sweden, help to identify the maker?

[Qrt.S]

Unfortunately there is no maker,s mark on the pictures only the Norwegian town mark for Bergen (seven dots) telling us that the saltcellars are made later than 1870. The maker,s mark might be found elsewhere on the cellars. Take a new look.

[Nata37]

Thank you so much for help