4 Mon 'Bunkyūeihō' Cursive script, 攵久永寶

The Bunkyū Eiraku was minted under Tokugawa authority during one of the most turbulent stretches of late Edo governance, as the shogunate simultaneously managed foreign treaty pressure, sonnō jōi agitation, and a currency system increasingly unable to meet circulation demand. The cursive script variant — as opposed to the standard block characters — was produced at different casting facilities and is treated as a distinct type by collectors precisely because Japanese mon coinage was cast, not struck, making each furnace's output subtly but consistently distinguishable.