I've come across a stone that is labeled as a Nakayama Tomae. It didn't come with any markings so I'm hoping that someone who has seen/handled a lot more stones than I have will be able to help with more information. I know it's a long shot.
Sorry that I can't tell. I'm going off photos he sent along. At this stage I just want to know what it might be? As without it it my hands I can't tell how it will perform. I had him send along a few more images.Is there any black sparkly skin on the back? It would shine/sparkle like little diamonds in the sun.