These napkin rings are identical in form and background decoration:  both have the same weight and dimensions; both have rolled lips; both have a stippled background; and both have a round medallion cartouche for engraving.

The "Dad" napkin ring has an elaborate repoussed or chased Chinese dragon, with mouth open as if to engulf the medallion, and it's body wrapped around almost to the other side of that medallion.

The mother napkin ring is more subtle with engraved bamboo decoration .

Both napkin rings have hard to read hallmarks.  Each looks like it has an incuse mark spelling the word silver, and another touch mark of an Asian letter or character perhaps.

Though I have listed these under sterling silver, I am not sure of the silver purity.