This manufacturer was in bussinesfrom about 1860 until about 1910. Many of their works are in museums.
At Victorian dinners, little individual salt dishes with tiny spoons were at each place setting, iirc. Not shakers.
There was a larger salt dish placed in the middle of the table, from which guests took some salt into the tiny individual salt dishes. Sitting “above the salt” meant a place of honor closer to the host, and “below the salt” was for the less important guests.
I think these are the tiny individual salts. In a set, there would be a larger dish as well, with a lid.