Help with mark on gingko leaf sash pin

[drg642]

Hi, Does anyone recognize the mark on this sash pin?  At first I thought it was WB in a diamond, but now I'm not sure.  It looks like there is a period between the 2 letters, but at the top of the letters, which makes me think it may be something followed by the letter M.  Anyway, I looked under B, M, and W on the RSJ site, and did some searching under WB and haven't come up with it.

Thanks for any help with this.

[clearsphere]

I see a backward R and M but don't have any info. Great pin by the way!

[don-franciscos-sister]

I don't generally associate these pins with Russia, but it could be Cyrillic initials.  The "backward R" would be pronounced "ya" in English.

[drg642]

Thank you both.  I've done some more research and seen the same or very similar pin with a different mark and unmarked, so it may not matter much.

[mforjan]

Sweety pin! I havent seen that mark before, I tried looking up MR thinking it may have been struck backwards but didn't find anything. Anyway, it's a beauty, lucky you 

[drg642]

Thanks for checking out MR!