Looks like a wooden brain :biggrin: I guess the one looks more like a Z, now that I'm looking at it more closely.
Yes, they are #26 Platypus Gun Burl spalted extreme ( B2 = Burl spalted extreme, B1 = Burl spalted regular/half blank spalted)
These are basically blanks from the very centre of the big burl the wife and I duged out, the centre was pretty rotten but, after the wood was dry, they made very interesting blanks, similar to my cigar wood from the Curly Gum rotten root.
I don't really like to use the work "rotten", people know mostly as spalted however, there are woods that don't really spalt, such as the Curly Gum but the Platypus Gum burl I got, had all stages in it, from decomposed, heavily spalted, mildly spalted and pure clean burl.
I still have lots of these old blanks, I once had all types listed on eBay but, I removed them a couple of years ago and, I haven't yet listed them all on my new web-store, I have a couple of types in there, but not all...!
I remember to have made one sample from each type I saw coming out of that burl, I actually posted them in
here on post #29.
I didn't have the stabilization set up, at that time, I sold lots of them as is, with a warning that, they would snap easily, they required hardening to be workable...!
Cheers
George