親しん筆ぴつ

noun

one's own handwriting; autograph

Refers to handwriting done personally, especially by someone of high rank or status. Often used in formal or respectful contexts.

• この手て紙がみは社しゃ長ちょうの親しん筆ぴつです。

  This letter is in the president's own handwriting.

• 親しん筆ぴつの署しょ名めいが入はいった書しょ類るいを受うけ取とった。

  I received a document with an autograph signature.