I'm a bit stumped.
It's the raised lip around the bowl/cup/thingy that makes me suspicious. It sorta looks like there's peckmarks, but a raised lip is v unusual.
Indeed! That's sort of why I was thinking less along the lines of cup-mark and more along the lines of... meh? ;o)
But it certainly looks very regular to me - too regular to be natural, I mean...
G x