This Hollow Form is Walnut, about 6-1/2″ around and 5″ tall.
Turned from a full log, so the pith (center of the log) runs thru the sides.
The stress around the pith usually leads to cracking. After it sat for a while and developed some cracks, I repaired them with Maple Pewa patches
There is a void in the side, where the tree grew around its own bark, likely due to some damage or a broken branch.