Teacher / educator / classroom brooch by Jonette Jewelry with 4 charms. Jonette Jewelry operated feom 1935 to 2006. Their work is collectible. Signed JJ. The blackboard is 1.75" wide by 1.25" tall. The loops and charms are another inch or so. Material unknown. It's lightweight. Excellent condition with no wear or damage. Comes from smoke-free cat-friendly home. Offers and questions always welcome.