Need Identification on This Bowl

Hi, is there any suggestion about this bowl? Is this antique? This bowl has a crackles light blue glaze on inside, the outside is dark brown with incised lines. The body is very perfect, except a finger touch in incised line in one side. The bootom is white (might be kaolin). Thank you in advance.

 

My first thought was studio pottery,but now Im wondering if its more a 60s production piece,possibly Japanese.

 

Thanks for your info. I also guests it is Japanese, and a very perfect one. But I can't find any marks of the brand or the maker. I guest start looking for Japanese studio pottery is a good idea.

 

Unique and very pretty!

 

Thanks

 

Finally I found a w mark near something I thought as finger tips, it is just a clue to the brown w mark near it. It seems as a Warren McKenzie's bowl.