It was released in 1928
and sold for a long time until 1996 as the design changed.
The (old) JIS mark is marked on the pencil and the package.
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(Old) JIS mark
In Japan, the Japanese Industrial Standard (JIS) mark has been introduced for pencils since the 1950s,
but as the pencil industry technology stabilizes,
the JIS mark is no longer displayed on pencils from the late 1990s.