I say Navajo since I found an identical one listed as a seed pot. But since there’s a pepper shaker I’m thinking it’s a salt cellar with matching shaker.
Considering the brutalist Art Deco design I’m thinking this lovely sterling silver set is from the 1920’s.
It is not marked from what I can see but it is definitely silver and solid silver from what I can tell
They measure approximately 2”x1.5”