Cut sided studio yunomi tea bowl, unmarked

Slightly heavyish yunomi, nicely cut sides. No mark. I guess it’s a tenmoku glaze?
Anything about it to give anyone a clue.

Maybe Richard Batterham?

A cut sided bowl needs a very good maker. Its a difficult thing to do well. I have not seen too many of them glazed with a thick tenmoku glaze. I t does seem to lessen the effect slightly. Geoffrey Whiting comes to mind. He often used this type of tenmoku glaze, and some of his pots do tend to glaze occluded. Although another potter whose work is often glaze occluded-and who certainly has the skill- is Mike Dodd.

It's well made and well glazed but the lack of a mark is suggesting to me that it might be "factory" made in Japan.