Why are YOU hijacking this thread with your thin skinned replies venwood? Free advice and it has nothing to do with you. Grow up and learn some forum etiquette. Alan can teach you more that you could ever learn about marbles, but you won't.
It's a ~100 year old hand-gathered transitional. I believe MFC. There is a name for these but I forget it. I have one or two in my collection, harder to find.