Studio stoneware bowl, foreign mark, Japanese?

Well thrown and glazed 10” footed bowl.
Looks quality. Speckled olive green glaze with blue tinges.
I’m hoping the style of glazing around the mark would be an unusual thing and might help with ID.
I couldn’t see the mark in the foreign language marks in the book.
Thank you, as ever.
I’ve put photos of the mark in 4 positions as I don’t know how to read it.

Certainly Japanese but I'm afraid I cant read the mark

Thank you. Maybe someone else will recognise the mark.

It looks like the type of indistinctive mark used by a factory producing Japanese wares for export. Like this, they are usually of very good quality but the retail price, in the UK and elsewhere when new, is low.

As with most Japanese marks, even by the best potters, the marks are unreadable by the Japanese themselves.

That’s good to know - I won’t ask a Japanese colleague to translate it then.