Brand: Mitsubishi Pencil Co.
Made in: Japan
Here is an older Hi-uni with the JIS mark and no barcode. The Japanese on the 3rd side says “Chosen by the Society for Penmanship Education in Wakayama Prefecture” – a sort of endorsement. Thanks for the info, Sola!
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.