REMUS silver brooch maker

Hi there - I bought this interesting coral brooch with an unidentified maker's mark. It looks like REMUS, and I'm assuming probably German/Austrian/Swiss as it's 935 silver. Somewhere between Arts and Crafts and Modernist in style but I've been unable to find anything on "REMUS", just lots of Romulus and Remus items! Does it look familiar to anyone? Many thanks in advance

 

Not a clue, but it's nice. The back says it's Chinese dyed red coral, so the pin is newer rather than older. Beyond that, maybe someone else knows something.

 

I wonder if it's a museum.