This type of tabletop "cruet" or condiment set typically includes a salt cellar (the open dish), a pepper pot (with the perforated lid), and often a mustard pot or a soft egg server
The handle and ball feet seen here are characteristic features of their Victorian-era designs. 
The mark "Elkington, Mason & Co." specifically dates the piece to between 1842 and 1861, the period when Josiah Mason was in partnership with George and Henry Elkington
3 Ball foot, Pepper shaker comes out, carry handle on side.
4" wide & 3 " tall. Spoon is missing, but a Great piece overall!