I didn't go searching for the shape but my brother did and he found it. (I'm no good at finding anything in computerland or peering at catalogues.)
No system of storing things is compatible with the way I put things away.
Unfortunately, we haven't got the glass in our mitts to see and feel how it really is.
I do know how pontil rods and the marks they leave, work and how they're treated and why.

A series of rings on the base suggests a mould. I'll go back and peer, and tell my brother to as well.
I've peered - no rings on the base.

There are a few around it, on the body, but that's just manufacturing.