The character '文' engraved in the Kaisho-tai (square style of writing) was originally written by Nagamichi OGASAWARA, wakadoshiyori, and called 'shinbun,' the character '攵' engraved in the Sosho-tai (cursive style writing) was originally written by Katsukiyo ITAKURA, roju (senior councilor), and called 'sobun,' and the character '寳,' spelt '宝'in the Sosho-tai (cursive style writing) was originally written by Yoshinaga MATSUDAIRA, the president of the political affairs and tasks, and called 'Ryakuho'.
「文」字が楷書体のものは若年寄・小笠原長行の筆によるもので「真文（しんぶん）」であり、草書体の「攵」となっているものが老中・板倉勝静の筆によるもので「草文（そうぶん）」であり、草書体で「寳」の字が「宝」となっているものが政事総裁・松平慶永の筆によるもので「略宝（りゃくほう）」と呼ばれる。