Four characters - Kan Ei Tsu Ho / Blank. 24.5mm, 3.36 grams. Kameido, Edo, Musashi Province, cast around 1714-1718. Hartill 4.104.

The meaning of "Maruya Sen", the name by which these coins were colloquially known, is unknown.

Most Japanese coins are very rare. These coins are, however, common - they were inspired by the Ming dynasty cash from China. "Kan Ei Tsu Ho" means "Universal Treasure of Kan Ei".