Brand: Mitsubishi Pencil Co.
Made in: Japan
I have one of these with the JIS mark and one without. Again the JIS mark is at least 10 years older than one being made today. NOTE: The model shown with the Matured label and JIS mark is available for purchase. One is marked Patented which makes it even older...how much I don't know yet. SPECIAL NOTE: If you buy all 5 Matured I have left, I will throw in the 6th one marked Patented.
Founded in 1887 and formerly known as Masaki Yomato, Mitsubishi Pencil Co., Ltd. is best-known today for its uni-ball brand of quality writing instruments sold worldwide. Curiously, this Tokyo-based business is unrelated to Mitsubishi Motors and other brands within the Mitsubishi Group. Same name, same logo, completely different company.