Old/ancient Chinese coins identification

I have these old/ancient Chinese coins, but I have no clue what they are or from what era. The lettering on the coins is pretty faded, but I'm sure some cleaning would make it much better. However, I'm no coin cleaner and have never cleaned any coins ever so I'll leave it as is and hopefully somebody can identify them. Thanks.

1. https://en.numista.com/catalogue/pieces28094.html
2. maybe https://en.numista.com/catalogue/pieces19755.html
3. https://en.numista.com/catalogue/pieces1133.html

Cita: "eazy.dog"​1. https://en.numista.com/catalogue/pieces28094.html
​2. maybe https://en.numista.com/catalogue/pieces19755.html
​3. https://en.numista.com/catalogue/pieces1133.html

​Thanks. These look pretty accurate. Any idea of what year they might be from?