U.S.S.R.

I have what appears to be a tea set. A partial tea set. I have 3 of these small bottom dishes/plates that you place the cups on. These are approximately 4" in diameter. I have 1 cup to this set. This cup is a little less than 4" in diameter and stands 1 3/4" high. All of these have writing underneath them which read: " U.S.S.R. M.M 01-06-1937 " All of these pieces have mult-color graphics of all sorts of birds and floral designs which look hand painted. I was given these from my mother who got these from her mother from eastern europe. I would like to know what these are worth? and also if possible..how do I go about selling these safely and more importantly to who? Thanks in advance for any advice or knowledge passed on.