Antique Cartier sterling silver #18 cigarette case, could also be a makeup compact, trinket case or business card box.
specs: 3-5/8" by 3-7/16", 3/4" thickness (closed) 3" by 3-3/8", 1/4" thickness (inside opening one side)
hallmarks: Cartier sterling silver 18
weight: 165.6 grams
condition: excellent