My kokeshi doll doesn't have Masao's mark on it. I've looked into it, and it seems other kokeshi dolls do have the mark. I'm not sure how I got it, but it belonged to my father-in-law. Could it have been unfinished during the production process? I believe it's definitely a kokeshi doll made by Mr. Masao Watanabe. If anyone knows, please tell me. I think it's a pretty old item. Thank you. Size: Approximately 30 cm tall.