Here are some info for a barby-Portuguese-British nice fellow.
It can be helpfull for other people, so I put the pictures on the forum
Modele 1890 : for 3 ctges clip
modele 1916 first type (on the left): for 5 ctges clips
modele 1916 second type (on the right): for 5 ctges clips. Adopted in 1925
Modele 1917: for 5 ctges. Used in the Mle 1917 rifles
(courtesy J. Barlerin)
Instruction clips (for Mle 1890 and both Mle1916) can be recognized by the letter X on one side of the clip