XVIII French (?) silver beacker - Strange marks - Help

[drillo]

Hello!
I would like your opinion on this silver beacker from my collection.
It looks like a French late XVIII - early XIX century and has a nice patina. I am not able to identify the marks and they look unusual to me.
The marks are on the bottom of the piece and also on the foot (see images).
If it is not French, what could it be?
Please let me know what you think about it. Thanks!

[Francais]

Hi
I don't think your pictures of the marks are in focus. If that is the case you might want to put the edge of a piece of paper next to them so the camera has something to focus on.
Maurice