We have several pieces with this same pattern as seen in the Pictures. I've searched and searched and it looks like RS Prussia pieces however it's not marked with their traditional markings. I know it is very very old and has been very well cared for thru the years. I saw a piece in a local shop selling for a few hundred dollars but wanted to find out from someone so we would know what it's worth. We don't have it on display. It's safely stored away.