Zebra Shikoku has a mark. Japan Zebra Company was founded in 1897 and has a history of more than 100 years. It is a representative professional pen manufacturer in Japan. For more than a century, Japan's Zebra Company has been striving for excellence in pen production and has grown into one of the world's leading writing instrument manufacturers. All Zebra pens are trademarked. Of course, the Zebra Shikoku launched also has its own trademark.