Two pinfire cartridges to ID

Can anybody shed some light on these two?
Who is U M?
And the la lyonnaise, for who was this made, and by who?
I have also a central fire of this headstamp.
In the shield is the word avant or avani.

Regards rené

2 Likes

Hi René,
very nice shells
Lars

Thanks.
Do you have any information about these?

Regards rené