chinese cash coin 1821-1850

I'm wondering if if this coin is authentic.
If it is I would like to know the variety.

Hello,

It's a Dao Guang Tong Bao, cast by the Board of Works (Boo yuwan), produced by the auxiliary furnaces (one dot tong, square head tong). I'd say it's Hartill #22.595, so it can be dated from between 1821 and 1823. Or maybe it's Hartill #22.598 (1824-1850, often degenerate) but I'm not sure if the guang is small or large.
My guess it's #22.598 but in the early years.

It seems authentic enough to me.

But wait for other answers.

Цитата: "Choucas"​Hello,
​
​It's a Dao Guang Tong Bao, cast by the Board of Works (Boo yuwan), produced by the auxiliary furnaces (one dot tong, square head tong). I'd say it's Hartill #22.595, so it can be dated from between 1821 and 1823. Or maybe it's Hartill #22.598 (1824-1850, often degenerate) but I'm not sure if the guang is small or large.
​My guess it's #22.598 but in the early years.
​
​It seems authentic enough to me.
​
​But wait for other answers.

​Thank you
I'll wait for others to confirm

Agree with everything Choucas says.

If you want its Numista page:
https://en.numista.com/catalogue/pieces12421.html