Question about grade, valuation and authenticity

Im having worries about couple of those coins, the 1788 duit and the French coin from 1635

those coins are maybe those

https://en.numista.com/catalogue/pieces52650.html

About that French coin,I'm wondering if that is the exact type, also how.should I grade that coin, patina, I can't see good VG,F,VF, What do you think?

https://en.numista.com/catalogue/pieces37440.html

About that one is complicated,my coin weighs 3.04grams, the one from the link is 3.84, I found different variations, some of them with the weight of mine, but with different design
Is it possible to have fake coin?

See photos below
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All of these coins, including the ones you have worry about, are perfectly authentic.

Quote: "Choucas"​All of these coins, including the ones you have worry about, are perfectly authentic.

​Thank you for relaxing my thoughts.
how about grading and valuation, also I am not sure if the coins from the photos are the same from the links? I'm asking only about those 2

https://fr.numista.com/forum/images/5d90c09a68075.jpg
https://fr.numista.com/forum/images/5d90c0b512cfa.jpg
https://fr.numista.com/forum/images/5d90c0cc34d86.jpg
https://fr.numista.com/forum/images/5d90c0e15cf97.jpg

Personally, I would grade the 1635 French coin about G+, because the date and some of the writing is legible, but not all, and overall the coin is in rough shape. For the 1788 duit, again personally, I would grade it F+. The dated side I would give a VF, the other side F, so averaging about F+. Of course others may have differing opinions, and grading depends to some degree on how well struck the original coins of that type were.

Quote: "Seeker55"​Personally, I would grade the 1635 French coin about G+, because the date and some of the writing is legible, but not all, and overall the coin is in rough shape. For the 1788 duit, again personally, I would grade it F+. The dated side I would give a VF, the other side F, so averaging about F+. Of course others may have differing opinions, and grading depends to some degree on how well struck the original coins of that type were.

​how about price(+-) for those 2, or for all because I will probably take all

It looks like the 1788 duit in F+ has a book value of about $5-6.

https://www.ngccoin.com/price-guide/world/netherlands-gelderland-duit-km-108-1788-1794-cuid-1112245-duid-1433470

The French 1635 double tournois of Louis XIII I don't find listed in NGC, but in my older edition (1999) of 17th century Krause's world coins this type of coin looks like it lists for about $6-10 in VG condition, depending on mint. (I would add some for time elapsed since then, subtract some for G+ compared to VG, so this is still a ballpark figure).

It should also be kept in mind that coins often sell for less than book value.
I don't see any reason to question the authenticity of these coins.