3 Small Old Chinese coins [opgelost]

please, help identify!

1. diameter: 20 mm
weight: 2.88 gr
magnetic



2. diameter: 20 mm
weight: 3.17 gr
slightly magnetic



3. diameter: ~19.5 mm
weight: 2.79 gr
nonmagnetic


thank you!

Third coin is Hsuan Tsung a.k.a. Tao-Kuang, 1821-1850, Board of Revenue mint

https://www.calgarycoin.com/reference/china/china8.htm#tao%20kuang

The second coin looks like the same emperor, but I can't tell the mint.

Hello

1/Xian Feng Tong Bao 22678 for Hartill

2/Dao Guang Tong Bao 22.646
Boo je for the mint

thank you very very much!

Was it common for these coins to not have their edges filed? That edge is similar to almost struck coins.

Good evening

Yes
these are coins which were melted in molds and which were then filed (deburred)
so not always done well
sorry for my english i use google translate this time so not sure of the translation

Thank you.
I appreciate the information, and your English is just fine.