The Man'en koban was minted from the Man'en era (1860-1867) to the Keio era (1860-1867).
The grade is 574 gold / 426 silver with a weight of 3.3g.
It is also called Hina Koban because of its small size.
The reverse engraving on this item is "Daikichi". This item is a koban with a certificate of authenticity and a paulownia box.
It comes with a certificate of authenticity and a paulownia box.
Click here to see more Edo period koban gold.