Hi Tim....is it possible that you've posted a wrong photo? I have to agree with Steve that the close-up of the bowl makes it look remarmably like Robinia (false Acacia). As soon as I saw the third photograph my thoughts were that it looked remarkably like a big lump of robinia that I turned a few years back. Coincidentally, mine came from a large country house near Malvern - it had been acquired by a man who sold all of his timber to me when he gave up turning.
I must say that whatever this turns out to be, the images, and especially the virtual-magnifying glass, are excellent - a lesson for us all, there!
Les