This item is a vintage 
glass open salt cellar (or salt holder) with an intaglio-style design of a Scottish Terrier. 
Product Details
  • Type: Open salt cellar or salt dish.
  • Material: Clear pressed glass, possibly crystal.
  • Design: Features a detailed, reverse-engraved (intaglio) image of a Scottish Terrier, a popular motif in the 1930s-1950s.
  • Era: These types of Art Deco glass items, often from Czechoslovakia (Bohemia), typically date back to the 1930s or 1940s.
  • Shape: It has a small, octagonal or rectangular, beveled shape.
  • Use: Open salts were used to hold table salt, which diners would pinch from the dish during meals.