Help to identify French coin KM # 875

Hello everyone, happy new year!
Someone explain to me what is the difference of French coin KM # 875 - 5 Centimes in connection with these words? If you have a picture to send help a lot.

1922 Poissy - thunderbolt mark
1924 Poissy - thunderbolt mark

I thank all

M. Olivetti

That is the mintmark of the Poissy, France mint, on the lower left of the coin, below the 5 number. I have one here, and show two pictures ...

                              

  Thank you it was a great help, now I understand the difference, greetings!
M. Olivetti