In the future, we really need your pictures to be in focus.
However, I can tell in this instance that the coin is from the era of the emperor Sheng Tsu (1662-1722).
To determine the exact type, we will need an in-focus picture of the other side.
The value depends on the condition and type, but most would be $1-3.
With 3,000 coins, we will want to give more general advice as to how to identify them.
If they are all Chinese cash, we can advise you as to how to make the process efficient.