Meriden B. Company Silver Creamer?

I do not know anything specifically about what this piece is or where it came from. My Mother recently passed away and it was in a box with her things. It has not been polished in probably a long time, it's more blackened than silver. I don't know how to rate the condition as I don't know what the criteria is for that. However, I don't see any deep scratches or markings that don't look they should be there. I don't know specifically what this is but for now I am calling it a creamer and plate..they both have the same markings and number on the bottom and I don't see other markings. I am not opposed to selling this as I don't believe it is a famiy piece. I just didn't want to give it away not knowing if it was worth anything. Thank You.