This is an extreme rarity. It is a Cembra pine, or Swiss stone pine, Pinus cembra. This is a five needle pine living in the Alps and in Siberia. These trees are very rare but even much rarer is a decent piece or material. I have never seen anything like a cembra pine cascade. This took quite a while but now it starts to be presentable. The pot is too big. It will look a lot better in a smaller pot next year.
The old images are from 2004 and the nice ones from today.