France 5 centimes 1897, question on material [решено]

Hello,
After sorting a bag of old coins that I inherited, I have questions on one of them.
It is a 5 cents from France, dated 1897.
I have another one that fits the description in Numista
https://en.numista.com/catalogue/pieces676.html

but the second one, which seems to have been wore as a necklace, seems not to be made in bronze.
Diameter is the same as the bronze one.

why do you think is different? maybe is not a coin and was made just for the necklace?

thanks, and sorry if it is a stupid question!

Bronze color is highly variable. I've got an english bronze coin that is White
Your coin looks like copper that is the main component of bronze.
So if the diameter and weight is adequate, so no problem.

If not what @Frenchlover says then it's probably plating, which is usually the explanation for most coins that aren't the colour they're "supposed to be".

great, thank you guys!