Studio Pottery ID

This is likely a long shot because I know how difficult it can be to identify studio pottery but we can try. Any information, or even opinions are welcome.
I got these 2 bowls a few years ago. The larger one is 8.25" across and the smaller one with the handles is 6.75" across. The larger one has a quite clear mark inscribed on the bottom - either "RV" or "RY" with the letters joined. The smaller one also has scratches on the bottom but I can't make anything of them. I acquired these together and they are sufficiently similar that I think they are by the same potter.
The first set of pics is the larger, then the smaller.