Help in distinguishing coins [gelöst]

Good evening to all,
there are some coins from French and Dutch India that look very similar, can anyone tell me how to distinguish them, please? And where can I find the date?
These are the coins:

1 Cash:
https://en.numista.com/catalogue/pieces48918.html
https://en.numista.com/catalogue/pieces58417.html

1/2 Duit:
https://en.numista.com/catalogue/pieces37233.html
https://en.numista.com/catalogue/pieces58418.html

Thanks in advance,
Nicola

For the first coin in question the reverse side appears to have a different orientation. But you would need a picture of the coin you are trying to identify to compare. For the second coin you listed they are different materials which will make the difference pretty clear even if the designs are exactly the same, which they do not appear to be. But again to match it we would need a picture of the coin in question to help

Thank you very much Taulipang,
so, can we consider as the only difference for the first coin, the different orientation of the reverse side?
I actually have this one:



I think it's: 1 Cash from Dutch India (Pondicherry Occupation) or maybe I'm wrong :/

Nicola

the only significant difference I see without seeing more examples, although the dots are also different in the example (not sure if that is consistent with other coins of this type). I would agree that it appears to be the dutch variety, based on the dots, extent of the design, the boldness of the strike, all more closely matching the dutch example

I completely agree with you about the dutch variety
As far as concerns the differences for the first coin, I tryed to search in net about that, but without having found much informations.

The second coin, identified as French, appears identical to the first coin and to similar examples on Zeno:

​https://www.zeno.ru/showgallery.php?cat=3354

The third example is the same design as the first two but slightly heavier. Based on Krause, that would seem to make it a different denomination but frankly, the Krause listings look a mess to me. I do think the first three are all likely Dutch Pondicherry.

The last piece indeed seems to be French but whether it is Pondicherry or another mint is difficult to say without reading the Tamil inscription.

https://www.zeno.ru/showgallery.php?cat=3347" rel="nofollow">https://www.zeno.ru/showgallery.php?cat=3347

Some specialist works are mentioned in the Zeno comments. Those would be well worth consulting.

Thank you very much for your answer, dltcoins!
After some researches ,I can say that you are right, because these two are the same coin:

https://en.numista.com/catalogue/pieces48918.html
https://en.numista.com/catalogue/pieces58417.html

And our catalogue shows wrong images for 1 Cash and 1/2 Doudou from French India!

The picture for 1 Cache from French India KM#58, must be this one:

https://www.marudhararts.com/printed-auction/auction-no-22/lot-no-447/coins-of-india/european-enclave/india-french/karial/copper-cache-coin-of-karaikal-issue-of-india-french-.html

And the one for 1/2 Doudou coin, must be:

https://www.zeno.ru/showphoto.php?photo=68929 (that has the same design in obv/rev for 1 Doudou, but different weight as Krause shows :/)

It could be interesting to find more differences between 1 Doudou and 1/2 Doudou from French India.
If someone has this book: "The Coins of the Dutch Overseas Territories 1601-1948" - Scholten C. can help us to learn more about these coins.

Nicola