Old China coins - identification & valuation

Could anybody help me to identify these old China coins (17-19 century?)

A coin at a time with a good picture or scan would be easier

1 - ???
I tried Yuantong - running script, but he never existed


2 - Qing dynasty (1644 à 1912) - Qianlong, 6th emp. (1736-1795
1 Cash - Qianlong (Boo-yuun) (1736-1794)


3 - 1 Cash - Qianlong (1736-1794) - mint unreadable


4 - 1 Cash - Qianlong (1736-1794) - mint unreadable


5 - Probably (the bottom character is not visible on the picture) Renzong °1010 + 1063, Fourth emperor of the Song dynasty from 1023 to 1063 - 4th era: Huangsong 1039-1054
Huang Song tong bao - Seal script (1039-1054)


6 - Song Dynasty (960 à 1279) - Shenzong, 6th emp (1067-1085)
Yuanfeng (Seal script) 2nd era (1078-1085)


7 - Song Dynasty (960 à 1279) - Zhenzong, 3rd emp. (997-1022)
Xiangfu Tong bao - 3rd era ; Regular script (1008-1016)

thank you very much Frenchlover, I´ve sent a private message to you

For the coin #1, no idea


The coin #5 is confirmed

Citação​

​#1 could be Vietnam Empire - 永壽通寶 (Vinh Tho Thong Bao) varieties

https://en.numista.com/catalogue/pieces59547.html

Citação: "bbybugs"​

Citação​

​​#1 could be Vietnam Empire - 永壽通寶 (Vinh Tho Thong Bao) varieties
​
​https://en.numista.com/catalogue/pieces59547.html

I's very close but the bottom character looks different
Vinh Tho Thong Bao

Anyway, it's the closest coin !

Yes, this is the closest I can think about so far.