同どう筆ひつ

noun

the same handwriting; identical writing

Used when confirming that two or more pieces of writing were done by the same person. Often appears in forensic or authentication contexts.

• この手て紙がみとあのメモは同どう筆ひつだ。

  This letter and that note are in the same handwriting.

• 鑑かん定ていの結けっ果か、署しょ名めいは同どう筆ひつと判はん断だんされた。

  As a result of the analysis, the signatures were determined to be by the same hand.