Vietnam Kingdom coins

Would like help identifying these coins, please.



Thank you for any help I can get.

PesPoissonFisch

1. https://en.numista.com/catalogue/pieces38886.html

2. Pictures are too bad; but if it's upside down I think I see "景" and "寶通".

Maybe here: https://en.numista.com/catalogue/index.php?mode=simplifie&p=1&l=&r=%E6%99%AF&e=&d=&ca=3&no=&i=&v=&m=&a=&t=&dg=&w=&u=&f=&g=&c=&tb=y&tc=y&tn=y&tp=y&tt=y&te=y&cat=y

3. https://en.numista.com/catalogue/pieces97928.html

4.Maybe here: https://en.numista.com/catalogue/index.php?mode=simplifie&p=1&l=&r=%E7%86%99&e=&d=&ca=3&no=&i=&v=&m=&a=&t=&dg=&w=&u=&f=&g=&c=&tb=y&tc=y&tn=y&tp=y&tt=y&te=y&cat=y

(I see 熙 on top, and 寶通 left and right)

Yes - 2 seems to be "Canh Hung Thong Bao"

Here are the 2 with which I continue to have problems identifying. Beter pictures, and OMG, I cleaned the coins.
The numbers have changed.
#1

#2

Thanks for messaging me!

No. 2 is like Frenchlover said, probably: https://en.numista.com/catalogue/pieces64868.html (check the reverse; it should be empty).

No. 4 I think may not be in the catalogue yet; this seems closest: https://en.numista.com/catalogue/pieces76211.html (characters are the same but script is different)