Hi, thanks for the info and links. I see what you mean about the Schneider bowls (I think that’s the closest match I’ve seen), the only thing is is that there is a definite horizontal swirl or twist to the top section of my bowl, which was what put me in mind of Anthony Stern. I had ruled out Stern as I hadn’t found any bowls with similar white, I think I’ll try asking him but keep an open mind.
The bowl is in a box in the back of a cupboard at the moment but I’ll dig it out and check for signatures. There weren’t any engraved signatures, but I may have missed something more subtle on the white, like Schneider. It’s good the way you come across a lead on an item when you’re not expecting it!