Japanese Art Pottery Vase

This very fine little 13cm tall Japanese vase looks like Sumida ware but without the addition of climbing figures.

it is very clearly marked but despite knowing a fair number of Japanese signatures I can’t make this one out. It won’t be on Gothenburg.

It’s a long shot but any ideas?

John

 

Might not be Japanese. Some British studio potters use pseudo marks.

 

In Chinese that character 茂 = Mao
In Japanese that character = Shigeru

 

Could not find the maker. I think this is either Iga-yaki or Bizen-yaki.

 

Thanks so much

john