Antique Japanese coin [gelöst]

Hi!
I need some help to identify the date of this Japanese coin and have a possible valuation.
It was given as a present to my uncle who was a senior bank director, from Japanese clients, so I'm pretty sure that this is not a fake.
It should be a Koban 1860-1867 (Manen Era) (gold), but I'd like your knowledge.
Thank you!

Yes, this piece is 1 Ryo - Edo mint
https://en.numista.com/catalogue/pieces22799.html

You can check weight and diameter to see if match the catalog.

Verweis : "bbybugs"​Yes, this piece is 1 Ryo - Edo mint
​https://en.numista.com/catalogue/pieces22799.html
​
​You can check weight and diameter to see if match the catalog.
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​ah great.. 3.3 grams seems just right
diameter matches!
Thanks!

That's awesome to have that coin as a present!

indeed :)