Oh, upon very very close examination, there IS a signature on the base. Unfortunately it's on the outside edge where there's a LOT of wear.
I (or J) N then about 1cm of bad scratches and then O N (or H)
The next word (if there is one - the lines seem lighter here, less defined) appears to have a K in it, but could be just deceptive wear.
I'll attempt a photograph tomorrow when my eyelids are less heavy. :lol: