A draft of a letter from bacteriologist Shibasaburo Kitasato, the face of Japan's new ¥1,000 bill, to educator Inazo Nitobe, featured on the outgoing ¥5,000 bill, has been found preserved in a museum, Jiji Press has learned.

The Kitasato Shibasaburo Memorial Museum in Tokyo will show the draft to the public from July 3, the day when the new ¥1,000 bill, along with the new ¥5,000 and ¥10,000 bills, will be put into circulation.

The draft "is an important document that reflects their times," a museum staff member said.