www.925-1000.com

For me a typical Art Deco pattern. Who is the maker SF with something between what looks like a tree with roots?

Hi,

Wait for better qualified opinions, but in the meantime search Souche Frères of Paris.

Hopefully another member will confirm/deny.

Trev.

I would go with Souche Fils, Paris, between 1925 and 1942.
It is indeed a tree trunk between the letters.