If I didn’t know any better I would suggest this is a castanet from somewhere in Asia. There is no maker’s mark. The lid is hinged and when you hold it by the O ring that is attached it makes a great castanet click. It has no iron in the material it is made from since it will not attract a magnet. It is a fairly heavy piece for its size. It is 2” in diameter and stands 1 ½” in height. It truly is a conversational piece and fun to display.