This is an Antique Arts & Crafts Hand Hammered Wrought Sterling Silver Powder Box or Jar circa 1910. Its got a stylized "B" on it and retains its original patina! It measures approximately 3 1/2 inches in diameter and 1 1/2 inches tall and weighs 132.2 grams. It is simply marked "Sterling" on its base. A well done finely hammered piece. Feel free to ask any questions.