ID needed on shotshell

I found this shotshell in France. I asked the guy if he new anything about it, but no luck.

Any information is appreciated.
Regards rené

René Michaux in Orleans
Trade mark of 1911.
Ctges made by cartoucherie Stephanoise before 1928 and made by SFM after 1928

Hi jp,
Thanks for that information!
Can you see by this case if it is before or after 1928??
Or is there no visible difference.

Regards rené

Hello René
The ctges with this hstp were made by cartoucherie Stephanoise in 1928 (and surely before) and made by SFM in 1929 and after.

your ctge is a SFM one


Thank you!