Received as a gift. There is no particular maker's mark, and there are signs of use. It seems to have actually been used, and there are parts that look like subtle cracks. I wiped them with water, but there are stains that won't come off (e.g., on the inside of the rim). There are no noticeable chips, but I dropped two of them while preparing for the listing and chipped them. I am not listing those, but I will carefully pack the remaining six. I don't know the exact material. It has a celadon-like color, but I can't be certain. It feels very light. Please feel free to comment if you have any other questions.＾＾