Silver filigree dip pen 84 zolodnik - Pen

On this silver pen holder are Russian hallmarks from the Tsarist era, late 19th century.
One rectangular cartouche with rounded corners containing the number 84 followed by a town mark.
This type of hallmark was used between 1882 and 1899.

* The number 84: This is the silver content according to the old Russian zolotnik system. 84 zolotniki today corresponds to a silver content of .875.
* Beside the number 84 there is a town mark. This is probably the town mark of St. Petersburg, namely two crossed anchors.

Above it is the master mark. This, however, is difficult to read.