Help identifying silver maker's mark (of a cat)

Hello!

I’d love some help identifying this silver mark. It looks like a cat inside the letter C.
Any help is appreciated!

“830 S” suggests to me that this is Norwegian, but I think that you too may be from Norway judging from your picture’s title (sølvmerke av katt) so you may be in a better position to find the maker. I have looked through the only 2 online sources for Norwegian marks of which I am aware and have not found this one listed.

Phil