We often see a scene in TV drama in which a thief like 'Nezumi kozo' (a Japanese thief and folk hero during the Edo period) are jumping over from one roof to another with a sen-ryo-bako under his arm, however, because a box full of koban of 1000 ryo often weights more than 15 kg, it is difficult to run and jump to escape with it under his arm.
テレビドラマなどで鼠小僧のような窃盗が逃亡する際に千両箱を脇に抱えながら屋根上を飛び移るシーンがあるが、実際に1000両分の小判の入った千両箱の重さは15キログラム以上になることもあるため、脇に抱えて走ったり飛んだりしながら逃亡するのは困難である。