Does anyone know this mark?

The trouble I find with symbol or abstract marks is they're a devil to search for without an idea of initials to look under! That aside, does anyone know this mark? THere is a fourth dot partially obscured by the brown stripe.

Don't know this mark, but I've seen similar marks and will keep an eye out for this one.

I thought I'd found a match for this mark on a cute little salt & pepper set I got today, however I got home to find it's a mirror image of it, and deeper. I wonder if they're related.. and another clue, the base of the salt pot has a sticker with "Van Helden Gallery, Days Bay, Eastbourne, NZ" on it, so that may help narrow it down a bit. Here's a photo.