Please ID 4 Inexpensive Coins for Me

Coin 1 (Chinese Cash coin - as much additional info as possible for this one)


Coin 2


Coin 3


Coin 4

 

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Coin #2 - South Africa
https://en.numista.com/catalogue/pieces4863.html

 

Coin #3 - South Africa
https://en.numista.com/catalogue/pieces2293.html

 

Coin #4 - South Korea 10 Won
https://en.numista.com/catalogue/pieces1654.html

 

Coin #1 - Chinese Ching dynasty Qianlong Tongbao 乾隆通寶. 1735–1796 AD.

Details of this coin, with various mint marks can be found at:
https://en.wikipedia.org/wiki/Qianlong_Tongbao

 

Thanks for all of the responses.
I can now put them in 2x2's and label them.

What then?
I'll try them on eBay and if they don't make it there I'll donate them to the local coin club.