The item in the image is a 
vintage glass salt cellar, also referred to by collectors as a salt dip. 
Details
  • Function: Salt cellars were once an important part of a formal dining table setting, used to hold individual portions of salt.
  • Material: The dish is made of clear glass with a cut or pressed pattern. The specific pattern features vertical ribs and a zigzag or V-shaped rim design.
  • Era: This style of glass salt cellar, often found in simple faceted designs, was commonly produced during the Depression era in the 1920s and 1930s.