I sold my favorite spalted piece at Oxford Day a few weeks ago (a very successful show despite the nasty weather). It was the only piece on display with no price and I had the buyer dicker for it since I was not that keen on selling. This one is a variation on that design of the spalted wood with darker top and bottom. The darker wood is sapele and I believe the spalted section is oak (maybe, perhaps). There is a bit of bug damage which actually adds some character to the piece.
This item available in my Etsy Store