Four characters - Kan Ei Tsu Ho / Blank. 25.5mm, 3.01 grams. Kameido, Edo, Musashi Province, cast around 1708-1712. Hartill 4.100.

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".